/* ============================================
   ORON TURGEMAN — PORTFOLIO DESIGN SYSTEM
   Dark Premium Theme | Framer-Ready
   ============================================ */

/* --- IMPORTS --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

/* --- CSS CUSTOM PROPERTIES --- */
:root {
  /* Colors — Light Tech */
  --bg-primary: #f8f9fc;
  --bg-secondary: #f0f1f5;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f5fa;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --accent: #3b82f6;
  --accent-light: #1e40af;
  --accent-glow: rgba(59, 130, 246, 0.1);
  --accent-gradient: linear-gradient(135deg, #3b82f6, #1e40af);
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-hover: rgba(0, 0, 0, 0.12);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.1);
  --gradient-overlay: linear-gradient(to bottom, transparent 30%, rgba(248, 249, 252, 0.92) 100%);

  /* Typography — DM Sans */
  --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font sizes */
  --fs-hero: clamp(44px, 5.5vw, 72px);
  --fs-h1: clamp(32px, 4vw, 48px);
  --fs-h2: clamp(26px, 3vw, 36px);
  --fs-h3: clamp(18px, 2vw, 24px);
  --fs-h4: clamp(16px, 1.5vw, 18px);
  --fs-body: 16px;
  --fs-small: 14px;
  --fs-tiny: 12px;
  --fs-label: 11px;

  /* Font weights — hierarchy */
  --fw-hero: 700;
  --fw-heading: 600;
  --fw-subheading: 500;
  --fw-body: 400;
  --fw-label: 600;
  --fw-bold: 700;

  /* Line heights */
  --lh-tight: 1.15;
  --lh-heading: 1.25;
  --lh-normal: 1.6;
  --lh-relaxed: 1.75;

  /* Letter spacing */
  --ls-tight: -0.025em;
  --ls-normal: -0.01em;
  --ls-wide: 0.06em;
  --ls-label: 0.1em;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --section-gap: 140px;
  --card-radius: 24px;
  --card-height: 520px;
  --grid-gap: 24px;
  --container-padding: 24px;

  /* Animation */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.7s;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --bg-primary: #02020a;
  --bg-secondary: #0a0a12;
  --bg-card: #111119;
  --bg-card-hover: #16161f;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b8;
  --text-muted: #6b6b78;
  --accent-light: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.6);
  --gradient-overlay: linear-gradient(to bottom, transparent 30%, rgba(2, 2, 10, 0.92) 100%);
}

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-toggle:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: scale(1.05);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon { display: none; }

.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

[data-theme="dark"] .nav {
  background: rgba(2, 2, 10, 0.85);
}

[data-theme="dark"] .btn-secondary {
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .project-tag {
  background: rgba(255, 255, 255, 0.1);
}

/* --- RESET & BASE --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* --- GLOBAL TYPOGRAPHY HIERARCHY --- */
h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-hero);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-heading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
}

h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-subheading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-normal);
}

h4 {
  font-size: var(--fs-h4);
  font-weight: var(--fw-subheading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-normal);
}

p {
  font-weight: var(--fw-body);
  line-height: var(--lh-normal);
}

strong, b {
  font-weight: var(--fw-heading);
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* --- LAYOUT --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--section-gap) 0;
  position: relative;
}

/* --- NAVIGATION --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(248, 249, 252, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  padding: 0 var(--container-padding);
}

.nav-logo {
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  font-size: 18px;
  letter-spacing: var(--ls-tight);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: var(--fs-small);
  font-weight: var(--fw-subheading);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-smooth);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  padding: 10px 24px;
  background: var(--accent-gradient);
  border-radius: 100px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: white !important;
  transition: transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-fast) var(--ease-spring);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* --- HERO SECTION --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--container-padding);
}

.hero-greeting {
  font-size: var(--fs-h3);
  font-weight: var(--fw-subheading);
  color: var(--text-secondary);
  margin-bottom: 16px;
  letter-spacing: var(--ls-normal);
  animation: fadeInUp var(--duration-slow) var(--ease-spring) both;
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: var(--fw-hero);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin-bottom: 24px;
  animation: fadeInUp var(--duration-slow) var(--ease-spring) 0.1s both;
}

.hero-name .accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: var(--fw-body);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  letter-spacing: var(--ls-normal);
  max-width: 600px;
  margin: 0 auto 40px;
  animation: fadeInUp var(--duration-slow) var(--ease-spring) 0.2s both;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp var(--duration-slow) var(--ease-spring) 0.3s both;
}

/* Blur orbs — atmospheric background */
.blur-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.blur-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  opacity: 0.08;
  top: 10%;
  left: -10%;
}

.blur-orb-2 {
  width: 400px;
  height: 400px;
  background: #3b82f6;
  opacity: 0.06;
  bottom: 20%;
  right: -5%;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 100px;
  font-family: var(--font-primary);
  font-size: var(--fs-small);
  font-weight: var(--fw-heading);
  letter-spacing: var(--ls-wide);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-spring);
  border: none;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

/* --- PROJECTS SECTION --- */
.projects {
  padding: var(--section-gap) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  font-size: var(--fs-label);
  font-weight: var(--fw-label);
  text-transform: uppercase;
  letter-spacing: var(--ls-label);
  color: var(--accent-light);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: var(--fw-hero);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

/* --- PROJECT CARDS --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--grid-gap);
}

.project-card {
  position: relative;
  height: var(--card-height);
  border-radius: var(--card-radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-spring);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.project-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.project-card:hover .project-card-image {
  transform: scale(1.05);
}

.project-card-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-overlay);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 40px;
}

.project-card-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.project-tag {
  padding: 4px 12px;
  background: rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(10px);
  border-radius: 100px;
  font-size: var(--fs-label);
  font-weight: var(--fw-label);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
}

.project-card-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-heading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
  margin-bottom: 8px;
}

.project-card-desc {
  font-size: var(--fs-small);
  font-weight: var(--fw-body);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
  margin-bottom: 20px;
}

.project-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-small);
  font-weight: var(--fw-heading);
  color: var(--accent-light);
  transition: gap var(--duration-fast) var(--ease-spring);
}

.project-card:hover .project-card-cta {
  gap: 12px;
}

.project-card-cta .arrow {
  transition: transform var(--duration-fast) var(--ease-spring);
}

.project-card:hover .project-card-cta .arrow {
  transform: translateX(4px);
}

/* --- ABOUT SECTION --- */
.about {
  padding: var(--section-gap) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-heading);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
  margin-bottom: 24px;
}

.about-text p {
  font-weight: var(--fw-body);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: 16px;
}

.about-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.tool-badge {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: var(--fs-small);
  font-weight: var(--fw-subheading);
  color: var(--text-secondary);
}

/* --- FOOTER / CONTACT --- */
.footer {
  padding: var(--section-gap) 0 60px;
  text-align: center;
}

.footer-cta-text {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: var(--fw-hero);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin-bottom: 16px;
}

.footer-subtitle {
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
  margin-bottom: 40px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 48px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: var(--fs-small);
  font-weight: var(--fw-subheading);
  transition: color var(--duration-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-divider {
  width: 60px;
  height: 1px;
  background: var(--border-subtle);
  margin: 48px auto;
}

.footer-copyright {
  font-size: var(--fs-tiny);
  color: var(--text-muted);
}

/* --- ANIMATIONS --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-spring),
              transform var(--duration-slow) var(--ease-spring);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > *:nth-child(1) { transition-delay: 0s; }
.stagger > *:nth-child(2) { transition-delay: 0.1s; }
.stagger > *:nth-child(3) { transition-delay: 0.2s; }
.stagger > *:nth-child(4) { transition-delay: 0.3s; }

/* --- RESPONSIVE: TABLET --- */
@media (max-width: 810px) {
  :root {
    --section-gap: 100px;
    --card-height: 420px;
    --grid-gap: 16px;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero-name {
    font-size: clamp(36px, 8vw, 56px);
  }

  .project-card-overlay {
    padding: 24px;
  }
}

/* --- RESPONSIVE: MOBILE --- */
@media (max-width: 390px) {
  :root {
    --section-gap: 64px;
    --card-height: 340px;
    --container-padding: 16px;
    --card-radius: 16px;
  }

  .hero {
    min-height: 90vh;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

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

  .project-card-title {
    font-size: 22px;
  }

  .footer-cta-text {
    font-size: clamp(28px, 6vw, 40px);
  }
}

/* --- LANGUAGE TOGGLE --- */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .nav-inner {
  flex-direction: row-reverse;
}

[dir="rtl"] .nav-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .project-card-cta .arrow {
  transform: rotate(180deg);
}

.lang-toggle {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: var(--fs-tiny);
  font-weight: var(--fw-heading);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.lang-toggle:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}