/* ==========================================================================
   Hossam Medhat Portfolio - Main Stylesheet
   Design theme inspired by KERO portfolio
   ========================================================================== */

/* ---------- Google Fonts ---------- */
@import url("https://fonts.googleapis.com/css2?family=Protest+Guerrilla&display=swap");
@import url("https://api.fontshare.com/v2/css?f[]=satoshi@1,900,700,500,301,701,300,501,401,901,400,2&display=swap");

/* ---------- CSS Variables (Design Tokens from KERO) ---------- */
:root {
  /* Color Palette */
  --bg-color: #071c24;
  --accent: #ffc760;
  --text-color: #cff8ff;
  --box-bg: #103f52;
  --error-color: #bb2124;
  --success-color: #22bb33;
  --loading-primary: rgb(186, 66, 255);
  --loading-secondary: rgb(0, 225, 255);
  --loading-bg: #132f3a;
  --card-border: rgba(255, 199, 96, 0.15);
  --card-shadow: rgba(0, 0, 0, 0.3);
  --overlay: rgba(7, 28, 36, 0.85);
  --section-alt-bg: #0a2630;

  /* Typography */
  --font-primary: "Satoshi", sans-serif;
  --font-display: "Protest Guerrilla", sans-serif;
  --fs-base: 16px;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-md: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.5rem;
  --fs-5xl: 3rem;
  --fs-hero: clamp(3rem, 8vw, 7rem);
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-bold: 700;
  --fw-black: 900;
  --line-height: 1.6;
  --letter-spacing: 0.9px;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Borders & Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 50%;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;

  /* Container */
  --container-max: 1200px;
  --container-wide: 90%;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  border: none;
}

html {
  scroll-behavior: smooth;
  font-size: var(--fs-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: var(--line-height);
  overflow-x: hidden;
  transition: background-color 1s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  background: none;
}

input, textarea {
  font-family: inherit;
}

/* ---------- Utility Classes ---------- */
.container {
  width: var(--container-wide);
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-title {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-black);
  color: var(--accent);
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-subtitle {
  font-size: var(--fs-lg);
  text-align: center;
  color: var(--text-color);
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
  opacity: 0.85;
}

.accent-text {
  color: var(--accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

section {
  padding: var(--space-5xl) 0;
}

section:nth-child(even) {
  background-color: var(--section-alt-bg);
}

/* ---------- Loading Screen ---------- */
.loading-container {
  display: flex;
  position: fixed;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background-color: var(--loading-bg);
  top: 0;
  left: 0;
  visibility: visible;
  opacity: 1;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  z-index: 9999;
}

.loading-container .spinner {
  background-image: linear-gradient(var(--loading-primary) 35%, var(--loading-secondary));
  width: 120px;
  height: 120px;
  animation: spin 1.7s linear infinite;
  border-radius: var(--radius-full);
  filter: blur(1px);
  box-shadow: 0px -5px 20px 0px var(--loading-primary),
    0px 5px 20px 0px var(--loading-secondary);
}

.loading-container .spinner .spinner-inner {
  background-color: var(--loading-bg);
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  filter: blur(10px);
}

.loading-container.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Scroll-to-Top Button ---------- */
.scroll-top-btn {
  position: fixed;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--box-bg);
  color: var(--accent);
  border: 1px solid var(--accent);
  bottom: 5%;
  right: 5%;
  cursor: pointer;
  z-index: 100;
  font-size: var(--fs-lg);
  transition: var(--transition-base);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  background-color: var(--accent);
  color: var(--bg-color);
  box-shadow: 0 0 15px rgba(255, 199, 96, 0.4);
}

/* ---------- Header / Navigation ---------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(7, 28, 36, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
  transition: var(--transition-base);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: var(--container-wide);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1em 0;
}

.header-container .logo a {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-black);
  color: #FFD700;
  letter-spacing: 2px;
  font-family: var(--font-display);
}

.header-container .logo a span {
  color: #FFFFFF;
}

/* Burger Icon */
.burger-icon {
  display: none;
  position: relative;
  width: 2.5em;
  height: 1.2em;
  cursor: pointer;
  z-index: 10001;
}

.burger-icon .line {
  position: absolute;
  width: 100%;
  height: 3px;
  background-color: var(--accent);
  border-radius: 2px;
  transition: var(--transition-base);
}

.burger-icon .line:first-child { top: 0; }
.burger-icon .line:last-child { bottom: 0; }

.burger-icon.active .line:first-child {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.burger-icon.active .line:last-child {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Nav */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-menu ul {
  display: flex;
  gap: var(--space-xl);
}

.nav-menu ul a {
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  letter-spacing: var(--letter-spacing);
  color: var(--text-color);
  position: relative;
  padding-bottom: 4px;
}

.nav-menu ul a::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--accent);
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px var(--accent), 0 0 15px var(--accent);
  opacity: 0;
  transition: var(--transition-base);
}

.nav-menu ul a:hover,
.nav-menu ul a.active-link {
  color: var(--accent);
}

.nav-menu ul a:hover::after,
.nav-menu ul a.active-link::after {
  opacity: 1;
}

.nav-cta {
  padding: 0.6em 1.5em;
  border-radius: var(--radius-xl);
  background: var(--box-bg);
  color: var(--accent);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  letter-spacing: var(--letter-spacing);
  transition: var(--transition-base);
}

.nav-cta:hover {
  color: var(--text-color);
  box-shadow: 0 0 15px rgba(255, 199, 96, 0.3);
}

/* ---------- Hero / Cover Section ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-color);
}

.hero-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--container-wide);
  max-width: var(--container-max);
  margin: 0 auto;
  gap: var(--space-3xl);
}

.hero-info {
  flex: 1;
  max-width: 650px;
}

.hero-label {
  display: inline-block;
  background: var(--box-bg);
  color: var(--accent);
  padding: 0.4em 1.2em;
  border-radius: var(--radius-xl);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: var(--fw-black);
  color: var(--accent);
  font-family: var(--font-display);
  font-style: italic;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  letter-spacing: 3px;
}

/* Hero statement gradient */
.hero-statement {
  background: linear-gradient(135deg, #ffc760, #ff6b35);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 4px 20px rgba(255, 199, 96, 0.25));
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title span {
  color: var(--text-color);
  display: block;
}

.hero-tagline {
  font-size: var(--fs-xl);
  color: var(--text-color);
  margin-bottom: var(--space-2xl);
  opacity: 0.9;
  line-height: 1.5;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.75em 1.8em;
  border-radius: var(--radius-xl);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  letter-spacing: var(--letter-spacing);
  transition: var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-color);
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(255, 199, 96, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--box-bg);
  color: var(--accent);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  color: var(--text-color);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
}

.hero-stat {
  text-align: center;
}

.hero-stat h3 {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-black);
  color: var(--accent);
}

.hero-stat p {
  font-size: var(--fs-sm);
  opacity: 0.8;
}

.hero-image {
  flex: 0 0 520px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  transform: translateY(-30px);
}

.hero-photo-wrapper {
  position: relative;
  width: 520px;
  height: 520px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 6px solid var(--accent);
  box-shadow:
    0 0 40px rgba(255, 199, 96, 0.25),
    0 0 80px rgba(255, 199, 96, 0.10),
    0 20px 60px rgba(0, 0, 0, 0.4);
  transition: var(--transition-base);
}

.hero-photo-wrapper:hover {
  box-shadow:
    0 0 50px rgba(255, 199, 96, 0.35),
    0 0 100px rgba(255, 199, 96, 0.15),
    0 20px 60px rgba(0, 0, 0, 0.4);
  transform: scale(1.03);
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-photo-badge {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(7, 28, 36, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.5em 1.4em;
  border-radius: var(--radius-xl);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 1px;
  white-space: nowrap;
  text-transform: uppercase;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* ---------- About Section ---------- */
#about {
  background-color: var(--section-alt-bg);
}

.about-container {
  display: flex;
  gap: var(--space-4xl);
  align-items: flex-start;
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--accent);
  margin-bottom: var(--space-lg);
  letter-spacing: 1px;
}

.about-text p {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.highlight-card {
  background: var(--box-bg);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
}

.highlight-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--card-shadow);
}

.highlight-card .icon-wrapper {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-sm);
}

.highlight-card h4 {
  color: var(--accent);
  font-size: var(--fs-lg);
  margin-bottom: var(--space-xs);
}

.highlight-card p {
  font-size: var(--fs-sm);
  opacity: 0.8;
}

/* ---------- Education Section ---------- */
.education-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--card-border);
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  gap: var(--space-2xl);
  align-items: center;
}

.education-icon {
  font-size: 4rem;
  color: var(--accent);
  flex-shrink: 0;
}

.education-info h3 {
  font-size: var(--fs-2xl);
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.education-info h4 {
  font-size: var(--fs-lg);
  color: var(--text-color);
  margin-bottom: var(--space-sm);
}

.education-info .edu-meta {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.education-info .edu-meta span {
  font-size: var(--fs-sm);
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.education-info .edu-meta span i {
  color: var(--accent);
}

.education-grad-project {
  background: rgba(255, 199, 96, 0.1);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  margin-top: var(--space-md);
  border-left: 3px solid var(--accent);
}

.education-grad-project h5 {
  color: var(--accent);
  font-size: var(--fs-md);
  margin-bottom: var(--space-xs);
}

.education-grad-project p {
  font-size: var(--fs-sm);
  opacity: 0.85;
}

/* ---------- Skills Section ---------- */
#skills {
  background-color: var(--section-alt-bg);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.skill-category {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
}

.skill-category:hover {
  border-color: var(--accent);
  box-shadow: 0 5px 20px var(--card-shadow);
}

.skill-category h3 {
  color: var(--accent);
  font-size: var(--fs-xl);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.skill-category h3 i {
  font-size: var(--fs-2xl);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  background: rgba(255, 199, 96, 0.1);
  color: var(--text-color);
  padding: 0.4em 1em;
  border-radius: var(--radius-xl);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  border: 1px solid rgba(255, 199, 96, 0.2);
  transition: var(--transition-base);
}

.skill-tag:hover {
  background: rgba(255, 199, 96, 0.25);
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Work Experience Section ---------- */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-3xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-2xl) - 6px);
  top: 6px;
  width: 15px;
  height: 15px;
  background: var(--accent);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(255, 199, 96, 0.3);
}

.timeline-content {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
}

.timeline-content:hover {
  border-color: var(--accent);
  box-shadow: 0 5px 20px var(--card-shadow);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.timeline-header h3 {
  font-size: var(--fs-xl);
  color: var(--accent);
}

.timeline-header .company {
  font-size: var(--fs-md);
  color: var(--text-color);
  font-weight: var(--fw-medium);
}

.timeline-header .duration {
  font-size: var(--fs-sm);
  color: var(--text-color);
  opacity: 0.7;
  background: rgba(255, 199, 96, 0.1);
  padding: 0.2em 0.8em;
  border-radius: var(--radius-xl);
}

.timeline-content ul {
  padding-left: var(--space-lg);
  list-style: disc;
}

.timeline-content ul li {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-sm);
  opacity: 0.9;
  line-height: 1.5;
}

.timeline-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.timeline-skills span {
  font-size: var(--fs-xs);
  background: rgba(255, 199, 96, 0.1);
  color: var(--accent);
  padding: 0.2em 0.7em;
  border-radius: var(--radius-xl);
}

/* ---------- Services Section ---------- */
#services {
  background-color: var(--section-alt-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition-base);
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--card-shadow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card .service-number {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-black);
  color: rgba(255, 199, 96, 0.15);
  font-family: var(--font-display);
  margin-bottom: var(--space-sm);
}

.service-card .service-icon {
  font-size: var(--fs-4xl);
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.service-card h3 {
  font-size: var(--fs-xl);
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.service-card ul {
  padding-left: var(--space-lg);
  list-style: disc;
}

.service-card ul li {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-xs);
  opacity: 0.85;
}

/* ---------- Projects Section ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--card-shadow);
}

/* Project Images */
.project-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--section-alt-bg);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.08);
}

/* Fallback for missing images */
.project-image img::after {
  content: attr(alt);
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0;
  padding: 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--box-bg), var(--section-alt-bg));
  color: var(--accent);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

.project-card-header {
  padding: var(--space-xl);
  padding-bottom: 0;
}

.project-card-header .project-type {
  display: inline-block;
  background: rgba(255, 199, 96, 0.15);
  color: var(--accent);
  padding: 0.2em 0.8em;
  border-radius: var(--radius-xl);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.project-card-header h3 {
  font-size: var(--fs-xl);
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.project-card-header .project-duration {
  font-size: var(--fs-sm);
  opacity: 0.7;
  margin-bottom: var(--space-md);
}

.project-card-body {
  padding: 0 var(--space-xl);
  flex: 1;
}

.project-card-body p {
  font-size: var(--fs-sm);
  opacity: 0.9;
  margin-bottom: var(--space-md);
}

.project-card-body .project-highlights {
  margin-bottom: var(--space-md);
}

.project-card-body .project-highlights li {
  font-size: var(--fs-sm);
  padding-left: var(--space-md);
  position: relative;
  margin-bottom: var(--space-xs);
  opacity: 0.85;
}

.project-card-body .project-highlights li::before {
  content: "▸";
  color: var(--accent);
  position: absolute;
  left: 0;
}

.project-card-footer {
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  border-top: 1px solid var(--card-border);
  margin-top: auto;
}

.project-tools {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.project-tools span {
  font-size: var(--fs-xs);
  background: rgba(255, 199, 96, 0.1);
  color: var(--text-color);
  padding: 0.2em 0.6em;
  border-radius: var(--radius-sm);
}

.project-links a {
  color: var(--accent);
  font-size: var(--fs-sm);
  transition: var(--transition-base);
  margin-left: var(--space-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.3em 0.7em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.project-links a:hover {
  color: var(--text-color);
  transform: scale(1.05);
}

.project-links .btn-github {
  border-color: var(--card-border);
}

.project-links .btn-github:hover {
  background: var(--accent);
  color: var(--bg-color);
  border-color: var(--accent);
}

.project-links .btn-linkedin {
  border-color: #0077b5;
  color: #0077b5;
}

.project-links .btn-linkedin:hover {
  background: #0077b5;
  color: white;
  border-color: #0077b5;
}

/* Project Achievement Badge */
.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  background: linear-gradient(135deg, rgba(255, 199, 96, 0.2), rgba(255, 199, 96, 0.05));
  color: var(--accent);
  padding: 0.3em 0.8em;
  border-radius: var(--radius-xl);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-sm);
  border: 1px solid rgba(255, 199, 96, 0.3);
}

/* ---------- Achievements Section ---------- */
#achievements {
  background-color: var(--section-alt-bg);
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.achievement-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 2px solid transparent;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.achievement-card:hover {
  border-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(255, 199, 96, 0.15);
}

/* Achievement Header (icon + thumbnails row) */
.achievement-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  min-height: 80px;
  width: 100%;
}

.achievement-card .achievement-icon {
  font-size: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  min-width: 80px;
  flex-shrink: 0;
  background: rgba(255, 199, 96, 0.1);
  border-radius: 50%;
  transition: var(--transition-base);
}

.achievement-card:hover .achievement-icon {
  background: rgba(255, 199, 96, 0.2);
  transform: scale(1.1);
}

/* Photo Thumbnails */
.achievement-thumbnails {
  display: flex;
  gap: 6px;
  flex: 1;
  justify-content: flex-end;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-base);
}

.achievement-thumbnails:hover {
  transform: scale(1.05);
}

.thumbnail {
  width: 55px;
  height: 55px;
  flex-shrink: 0;
  border-radius: 8px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border: 2px solid rgba(255, 199, 96, 0.3);
  transition: var(--transition-base);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.thumbnail:hover {
  border-color: var(--accent);
  transform: scale(1.15);
  z-index: 2;
}

.thumbnail-more {
  width: 55px;
  height: 55px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(255, 199, 96, 0.9);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  font-size: 0.9rem;
  color: var(--bg-color);
  transition: var(--transition-base);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.thumbnail-more:hover {
  background: var(--accent);
  transform: scale(1.15);
}

/* Content Section */
.achievement-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
  width: 100%;
}

.achievement-card h4 {
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.achievement-card .achievement-org {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.achievement-card .achievement-date {
  font-size: 0.85rem;
  opacity: 0.6;
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
}

.achievement-card .achievement-date::before {
  content: "\1F4C5";
}

.achievement-card .achievement-detail {
  font-size: var(--fs-sm);
  color: var(--text-color);
  opacity: 0.75;
  margin-bottom: 1.5rem;
  line-height: 1.7;
  text-align: left;
  flex: 1;
}

/* View Gallery Button */
.btn-view-gallery {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  margin-top: auto;
  padding: 0.75em 1.5em;
  background: linear-gradient(135deg, var(--accent), #ff6b35);
  color: var(--bg-color);
  border: none;
  border-radius: 8px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  cursor: pointer;
  transition: var(--transition-base);
  align-self: center;
  font-family: var(--font-primary);
}

.btn-view-gallery:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(255, 199, 96, 0.3);
}

/* ---------- Gallery Lightbox Modal ---------- */
.gallery-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 99999;
}

.gallery-modal.active {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: galleryFadeIn 0.3s ease;
}

@keyframes galleryFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.gallery-modal .modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 0;
}

.gallery-modal .modal-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gallery-modal .modal-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  font-size: 1.5rem;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  z-index: 2;
}

.gallery-modal .modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

.gallery-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 90vw;
  max-height: 80vh;
  min-width: 200px;
  min-height: 200px;
}

.gallery-container img {
  display: block !important;
  visibility: visible !important;
  max-width: 100%;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.8);
  transition: opacity 0.15s ease;
  background: rgba(255, 255, 255, 0.05);
}

/* Gallery Nav Arrows */
.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  font-size: 1.5rem;
  width: 54px;
  height: 54px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  z-index: 2;
}

.gallery-nav:hover {
  background: rgba(255, 255, 255, 0.3);
}

.gallery-nav:active {
  background: rgba(255, 255, 255, 0.45);
  transform: translateY(-50%) scale(0.92);
}

.gallery-nav.prev { left: -80px; }
.gallery-nav.next { right: -80px; }

/* Gallery Counter */
.gallery-counter {
  position: absolute;
  bottom: -50px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  color: white;
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
}

/* Body scroll lock when gallery modal is open */
body.modal-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
  touch-action: none;
  -webkit-overflow-scrolling: none;
}

/* ---------- Testimonials Section ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--card-border);
  transition: var(--transition-base);
  position: relative;
}

.testimonial-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 25px var(--card-shadow);
}

.testimonial-card .quote-icon {
  font-size: var(--fs-4xl);
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: var(--space-md);
}

.testimonial-card blockquote {
  font-size: var(--fs-md);
  font-style: italic;
  opacity: 0.9;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.testimonial-card .testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-card .testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--bg-color);
  flex-shrink: 0;
}

.testimonial-card .testimonial-info h5 {
  color: var(--accent);
  font-size: var(--fs-md);
}

.testimonial-card .testimonial-info p {
  font-size: var(--fs-sm);
  opacity: 0.7;
}

.testimonial-card .testimonial-stars {
  color: var(--accent);
  font-size: var(--fs-sm);
  margin-top: var(--space-sm);
}

/* LinkedIn Testimonial Cards (Image-based) */
.testimonial-card.linkedin-testimonial {
  padding: 0;
  overflow: hidden;
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
}

.testimonial-card.linkedin-testimonial img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border: 1px solid var(--card-border);
  border-bottom: none;
}

.testimonial-card.linkedin-testimonial .view-original {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: #0077b5;
  color: white;
  font-size: 0.9rem;
  font-weight: var(--fw-bold);
  text-decoration: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  transition: var(--transition-base);
  justify-content: center;
}

.testimonial-card.linkedin-testimonial .view-original:hover {
  background: #005f93;
  box-shadow: 0 4px 15px rgba(0, 119, 181, 0.4);
}

/* Verified Badge */
.verified-badge {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--success-color);
  background: rgba(34, 187, 51, 0.1);
  padding: 0.25em 0.75em;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(34, 187, 51, 0.25);
}

/* Khamsat Image Testimonial Cards */
.testimonial-card.khamsat-image {
  padding: 0;
  overflow: hidden;
  background: transparent;
  position: relative;
  border: none;
}

.testimonial-card.khamsat-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
}

.testimonial-card.khamsat-image .khamsat-badge {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: white;
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ---------- Contact Section ---------- */
.contact-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: var(--fw-black);
  color: var(--accent);
  text-shadow: 0 0 40px rgba(255, 199, 96, 0.3);
  letter-spacing: 2px;
}

.contact-container {
  display: flex;
  gap: var(--space-3xl);
  width: var(--container-wide);
  max-width: var(--container-max);
  margin: 0 auto;
}

.contact-form-wrapper {
  flex: 1;
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: 0 0 10px var(--card-shadow);
}

.contact-form-wrapper h3 {
  font-size: var(--fs-4xl);
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.contact-form-wrapper > p {
  margin-bottom: var(--space-2xl);
  opacity: 0.85;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  position: relative;
  width: 100%;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 0;
  color: var(--text-color);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--accent);
  outline: none;
  font-size: var(--fs-md);
  transition: var(--transition-base);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group label {
  position: absolute;
  top: 12px;
  left: 0;
  font-size: var(--fs-md);
  color: var(--text-color);
  opacity: 0.6;
  transition: var(--transition-base);
  pointer-events: none;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
  top: -18px;
  font-size: var(--fs-xs);
  color: var(--accent);
  opacity: 1;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--text-color);
}

.contact-form .btn {
  align-self: flex-start;
}

.contact-form .btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

/* Form Messages */
.form-message {
  position: fixed;
  left: -100%;
  top: 5%;
  padding: 1em 1.5em;
  display: flex;
  gap: 0.8em;
  align-items: center;
  border-radius: var(--radius-sm);
  border: 2px solid var(--accent);
  background: var(--box-bg);
  transition: var(--transition-base);
  z-index: 9998;
  font-weight: var(--fw-medium);
}

.form-message i {
  font-size: var(--fs-2xl);
  color: var(--accent);
}

.form-message.error {
  border-color: var(--error-color);
}

.form-message.error i {
  color: var(--error-color);
}

.form-message.show {
  left: 2%;
}

/* Contact Info Sidebar */
.contact-info-side {
  flex: 0 0 350px;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info-card {
  background: var(--box-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: var(--transition-base);
}

.contact-info-card:hover {
  border-color: var(--accent);
}

.contact-info-card .ci-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: rgba(255, 199, 96, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

.contact-info-card .ci-text p {
  font-size: var(--fs-sm);
  opacity: 0.7;
}

.contact-info-card .ci-text a,
.contact-info-card .ci-text span {
  font-size: var(--fs-md);
  color: var(--text-color);
  display: block;
}

.contact-info-card .ci-text a:hover {
  color: var(--accent);
}

.contact-social {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.contact-social a {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--box-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xl);
  color: var(--text-color);
  transition: var(--transition-base);
}

.contact-social a:hover {
  background: var(--accent);
  color: var(--bg-color);
  border-color: var(--accent);
}

.availability-badge {
  background: rgba(34, 187, 51, 0.15);
  border: 1px solid rgba(34, 187, 51, 0.3);
  color: var(--success-color);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  margin-top: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.5em;
  justify-content: center;
}

.availability-badge .pulse {
  width: 10px;
  height: 10px;
  background: var(--success-color);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 187, 51, 0.7); }
  70% { opacity: 1; box-shadow: 0 0 0 10px rgba(34, 187, 51, 0); }
  100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 187, 51, 0); }
}

/* ---------- Footer ---------- */
footer {
  padding: var(--space-xl) 0;
  border-top: 2px solid rgba(255, 199, 96, 0.3);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  width: var(--container-wide);
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer-container .copyright p {
  font-size: var(--fs-sm);
  opacity: 0.8;
  letter-spacing: 0.5px;
}

.footer-container .copyright a {
  color: var(--accent);
}

.footer-social {
  display: flex;
  gap: var(--space-lg);
}

.footer-social a {
  color: var(--text-color);
  font-size: var(--fs-xl);
  transition: var(--transition-base);
}

.footer-social a:hover {
  color: var(--accent);
}

/* ---------- Animations / Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger-children .reveal {
  transition-delay: calc(var(--stagger-index, 0) * 0.1s);
}

/* ---------- Responsive Design ---------- */

/* ---- Touch & mobile global helpers ---- */
@media (hover: none) and (pointer: coarse) {
  /* Remove hover-only transforms on touch devices to avoid sticky states */
  .project-card:hover,
  .service-card:hover,
  .achievement-card:hover,
  .highlight-card:hover,
  .skill-category:hover,
  .timeline-content:hover,
  .testimonial-card:hover {
    transform: none;
  }
}

/* Ensure minimum touch-target size globally */
a, button, .btn, .nav-cta, .btn-view-gallery, .scroll-top-btn,
.gallery-nav, .modal-close, .burger-icon, .contact-social a, .footer-social a {
  -webkit-tap-highlight-color: transparent;
}

/* Large screens */
@media (min-width: 1440px) {
  :root {
    --fs-base: 18px;
  }
}

@media (min-width: 2000px) {
  :root {
    --fs-base: 22px;
  }
}

/* Tablet ≤ 1023px */
@media (max-width: 1023px) {
  .hero-container {
    flex-direction: column;
    text-align: center;
  }

  .hero-info {
    max-width: 100%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-image {
    flex: none;
    margin-top: var(--space-xl);
    transform: none;
  }

  .hero-photo-wrapper {
    width: 380px;
    height: 380px;
  }

  .about-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .about-highlights {
    grid-template-columns: 1fr 1fr;
  }

  .education-card {
    flex-direction: column;
    text-align: center;
  }

  .contact-container {
    flex-direction: column;
    align-items: center;
  }

  .contact-info-side {
    flex: none;
    width: 100%;
  }

  .contact-social {
    justify-content: center;
  }

  .availability-badge {
    justify-content: center;
  }
}

/* Portrait-mode reinforcement — ensures burger + slide-out nav work in portrait */
@media (max-width: 768px) and (orientation: portrait) {
  .burger-icon {
    display: flex !important;
  }

  .nav-menu {
    position: fixed;
    right: -100%;
    height: 100vh;
    height: 100dvh;
  }

  .nav-menu.active {
    right: 0;
  }
}

/* Mobile Nav ≤ 768px */
@media (max-width: 768px) {
  .achievements-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .achievement-card {
    padding: 1.5rem;
  }

  .achievement-header {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    min-height: auto;
  }

  .achievement-card .achievement-icon {
    width: 70px;
    height: 70px;
    min-width: 70px;
    font-size: 2.5rem;
  }

  .achievement-thumbnails {
    justify-content: center;
    gap: 5px;
    flex-wrap: wrap;
  }

  .thumbnail,
  .thumbnail-more {
    width: 50px;
    height: 50px;
  }

  .achievement-card h4 {
    font-size: 1.1rem;
  }

  .achievement-card .achievement-detail {
    font-size: 0.9rem;
  }

  .burger-icon {
    display: block;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;          /* dynamic viewport height — avoids iOS URL-bar gap */
    background: var(--box-bg);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-2xl);
    padding: var(--space-2xl);
    transition: var(--transition-base);
    z-index: 10000;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu ul {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .nav-menu ul a {
    font-size: var(--fs-xl);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .nav-cta {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
  }

  .nav-overlay.active {
    display: block;
  }

  .hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
  }

  .hero-tagline {
    font-size: var(--fs-md);
  }

  .hero-photo-wrapper {
    width: 320px;
    height: 320px;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .hero-buttons {
    gap: var(--space-sm);
  }

  .hero-buttons .btn {
    min-height: 44px;
    padding: 0.6em 1.4em;
    font-size: var(--fs-sm);
  }

  .section-title {
    font-size: var(--fs-3xl);
  }

  .section-subtitle {
    font-size: var(--fs-md);
  }

  section {
    padding: var(--space-3xl) 0;
  }

  .about-highlights {
    grid-template-columns: 1fr;
  }

  .about-text p {
    font-size: var(--fs-md);
    text-align: left;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .achievements-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  /* Gallery responsive — mobile */
  .gallery-container {
    max-width: 95vw;
  }

  .gallery-container img {
    max-height: 70vh;
    border-radius: 0;
    box-shadow: none;
  }

  .gallery-nav {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }

  .gallery-nav.prev { left: 8px; }
  .gallery-nav.next { right: 8px; }

  .gallery-nav:active {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-50%) scale(0.88);
  }

  .gallery-modal .modal-close {
    top: 10px;
    right: 10px;
    width: 44px;
    height: 44px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .gallery-counter {
    bottom: 12px;
    font-size: var(--fs-xs);
    padding: 0.3rem 1rem;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  .timeline {
    padding-left: var(--space-xl);
  }

  .timeline-header {
    flex-direction: column;
  }

  .timeline-content {
    padding: var(--space-lg);
  }

  .contact-container {
    gap: var(--space-xl);
  }

  .contact-form-wrapper {
    padding: var(--space-xl);
  }

  .contact-form-wrapper h3 {
    font-size: var(--fs-2xl);
  }

  /* Ensure form inputs are large enough to tap */
  .form-group input,
  .form-group textarea {
    font-size: 16px;   /* prevents iOS auto-zoom on focus */
    min-height: 44px;
    padding: 12px 0;
  }

  .contact-form .btn {
    min-height: 48px;
    width: 100%;
    justify-content: center;
  }

  /* Footer stacking */
  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: var(--space-lg);
  }

  .footer-social {
    justify-content: center;
  }

  .footer-social a {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Scroll-to-top adjustments */
  .scroll-top-btn {
    width: 44px;
    height: 44px;
    right: 4%;
    bottom: 4%;
  }

  /* Contact social icons touch targets */
  .contact-social a {
    min-width: 48px;
    min-height: 48px;
  }

  /* Button gallery touch target */
  .btn-view-gallery {
    min-height: 44px;
  }

  /* Project links touch targets */
  .project-links a {
    min-height: 44px;
    min-width: 44px;
    padding: 0.5em 0.8em;
  }
}

/* Small phones ≤ 480px */
@media (max-width: 480px) {
  .hero-photo-wrapper {
    width: 280px;
    height: 280px;
  }

  .hero-title {
    font-size: clamp(2rem, 10vw, 3.5rem);
  }

  .hero-tagline {
    font-size: var(--fs-sm);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stat h3 {
    font-size: var(--fs-2xl);
  }

  .section-title {
    font-size: clamp(1.5rem, 7vw, 2rem);
  }

  .section-subtitle {
    font-size: var(--fs-sm);
  }

  .hero-photo-badge {
    bottom: 15px;
    font-size: var(--fs-xs);
    padding: 0.4em 1em;
  }

  .education-card {
    padding: var(--space-lg);
  }

  .education-info .edu-meta {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .education-info h3 {
    font-size: var(--fs-lg);
  }

  .education-info h4 {
    font-size: var(--fs-md);
  }

  .timeline-content ul {
    padding-left: var(--space-md);
  }

  .service-card {
    padding: var(--space-lg);
  }

  .service-card .service-number {
    font-size: var(--fs-3xl);
  }

  .project-card-header {
    padding: var(--space-lg);
    padding-bottom: 0;
  }

  .project-card-body {
    padding: 0 var(--space-lg);
  }

  .project-card-footer {
    padding: var(--space-md) var(--space-lg);
    flex-direction: column;
    align-items: flex-start;
  }

  .project-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    width: 100%;
  }

  .project-links a {
    margin-left: 0;
  }

  .achievement-card {
    padding: var(--space-lg);
  }

  .contact-form-wrapper {
    padding: var(--space-lg);
  }

  .contact-form-wrapper h3 {
    font-size: var(--fs-xl);
  }

  .contact-info-card {
    padding: var(--space-md);
  }

  /* Gallery — full width on tiny screens */
  .gallery-modal .modal-content {
    max-width: 100vw;
  }

  .gallery-container img {
    max-height: 50vh;
  }

  /* Form message positioning */
  .form-message.show {
    left: 3%;
    right: 3%;
    font-size: var(--fs-sm);
  }
}

/* Extra small phones ≤ 375px */
@media (max-width: 375px) {
  :root {
    --container-wide: 94%;
  }

  .hero-photo-wrapper {
    width: 240px;
    height: 240px;
  }

  .hero-label {
    font-size: var(--fs-xs);
    padding: 0.3em 0.8em;
  }

  .hero-title {
    font-size: clamp(1.8rem, 10vw, 2.5rem);
  }

  .hero-buttons .btn {
    font-size: var(--fs-xs);
    padding: 0.7em 1em;
  }

  .hero-stat h3 {
    font-size: var(--fs-xl);
  }

  .hero-stat p {
    font-size: var(--fs-xs);
  }

  .skill-tag {
    font-size: var(--fs-xs);
    padding: 0.3em 0.7em;
  }

  .timeline {
    padding-left: var(--space-lg);
  }

  .timeline-item::before {
    left: calc(-1 * var(--space-lg) - 6px);
    width: 12px;
    height: 12px;
  }

  .timeline-header h3 {
    font-size: var(--fs-md);
  }

  .timeline-header .company {
    font-size: var(--fs-sm);
  }

  .timeline-content ul li {
    font-size: var(--fs-xs);
  }

  .testimonial-card.linkedin-testimonial .view-original {
    font-size: var(--fs-sm);
    padding: 0.6rem 1rem;
  }

  .availability-badge {
    font-size: var(--fs-xs);
    padding: var(--space-sm) var(--space-md);
  }

  .footer-container .copyright p {
    font-size: var(--fs-xs);
  }
}

/* Minimum 320px viewport protection */
@media (max-width: 320px) {
  .hero-photo-wrapper {
    width: 200px;
    height: 200px;
  }

  .hero-photo-badge {
    font-size: 0.65rem;
    padding: 0.3em 0.6em;
    bottom: 10px;
  }

  .nav-menu {
    width: 85%;
  }
}