/* ═══════════════════════════════════════
   EQUUS PORTFOLIO — Design System
   ═══════════════════════════════════════ */

/* ── Variables ── */
:root {
  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* 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;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.3s var(--ease);
  --transition-slow: 0.6s var(--ease);
}

/* ── Dark Theme (default) ── */
[data-theme="dark"] {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a28;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-tertiary: #6a6a80;

  --accent-1: #7c5cfc;
  --accent-2: #5c8cfc;
  --accent-3: #5cfcb6;
  --gradient-main: linear-gradient(135deg, #7c5cfc 0%, #5c8cfc 50%, #5cfcb6 100%);
  --gradient-hero: linear-gradient(135deg, rgba(124, 92, 252, 0.15) 0%, rgba(92, 140, 252, 0.08) 50%, rgba(92, 252, 182, 0.05) 100%);

  --border: rgba(255, 255, 255, 0.06);
  --border-active: rgba(124, 92, 252, 0.4);

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(124, 92, 252, 0.15);
  --shadow-glow: 0 0 60px rgba(124, 92, 252, 0.2);

  --nav-bg: rgba(10, 10, 15, 0.8);
  --overlay-bg: rgba(0, 0, 0, 0.6);
}

/* ── Light Theme ── */
[data-theme="light"] {
  --bg-primary: #f8f8fc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eeeef4;
  --bg-card: rgba(0, 0, 0, 0.02);
  --bg-card-hover: rgba(0, 0, 0, 0.04);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-border: rgba(0, 0, 0, 0.08);

  --text-primary: #1a1a2e;
  --text-secondary: #555570;
  --text-tertiary: #8888a0;

  --accent-1: #6a4cfc;
  --accent-2: #4c7cfc;
  --accent-3: #10b981;
  --gradient-main: linear-gradient(135deg, #6a4cfc 0%, #4c7cfc 50%, #10b981 100%);
  --gradient-hero: linear-gradient(135deg, rgba(106, 76, 252, 0.08) 0%, rgba(76, 124, 252, 0.05) 50%, rgba(16, 185, 129, 0.03) 100%);

  --border: rgba(0, 0, 0, 0.08);
  --border-active: rgba(106, 76, 252, 0.4);

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 32px rgba(106, 76, 252, 0.12);
  --shadow-glow: 0 0 60px rgba(106, 76, 252, 0.1);

  --nav-bg: rgba(248, 248, 252, 0.85);
  --overlay-bg: rgba(0, 0, 0, 0.4);
}

/* ── Reset ── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ═══════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border var(--transition);
}

.nav__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.25rem;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__theme-toggle,
.nav__lang-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font);
}

.nav__theme-toggle:hover,
.nav__lang-toggle:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav__theme-toggle svg {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .icon-sun {
  display: block;
}

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

[data-theme="light"] .icon-sun {
  display: none;
}

[data-theme="light"] .icon-moon {
  display: block;
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
}

.nav__burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__burger.active span:nth-child(2) {
  opacity: 0;
}

.nav__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.hero__orb--1 {
  width: 500px;
  height: 500px;
  background: var(--accent-1);
  top: -20%;
  right: -10%;
  animation-delay: 0s;
}

.hero__orb--2 {
  width: 400px;
  height: 400px;
  background: var(--accent-2);
  bottom: -15%;
  left: -5%;
  animation-delay: -7s;
}

.hero__orb--3 {
  width: 300px;
  height: 300px;
  background: var(--accent-3);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes orbFloat {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  25% {
    transform: translate(30px, -30px) scale(1.05);
  }

  50% {
    transform: translate(-20px, 20px) scale(0.95);
  }

  75% {
    transform: translate(15px, 15px) scale(1.02);
  }
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero__badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(10px);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xl);
}

.hero__title--gradient {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
}

.hero__scroll-line {
  width: 2px;
  height: 40px;
  background: var(--gradient-main);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% {
    top: -100%;
  }

  50% {
    top: 100%;
  }

  100% {
    top: 100%;
  }
}

/* ═══════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124, 92, 252, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124, 92, 252, 0.4);
}

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

.btn--outline:hover {
  border-color: var(--border-active);
  background: var(--bg-glass);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* ═══════════════════════════════════════
   STATS
   ═══════════════════════════════════════ */
.stats {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  transition: background var(--transition);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stats__item {
  text-align: center;
  padding: var(--space-xl);
}

.stats__number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stats__plus {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats__label {
  display: block;
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ═══════════════════════════════════════
   SECTION HEADERS
   ═══════════════════════════════════════ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ═══════════════════════════════════════
   PROJECTS
   ═══════════════════════════════════════ */
.projects {
  padding: var(--space-4xl) 0;
}

/* Filters */
.projects__filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.projects__filter {
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}

.projects__filter:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
}

.projects__filter.active {
  background: var(--gradient-main);
  color: #fff;
  border-color: transparent;
}

/* Category Headers */
.projects__category {
  margin-bottom: var(--space-xl);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.category-header__icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.category-header__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.category-header__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Project Grid */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.projects__grid--featured {
  grid-template-columns: 1fr;
}

/* Project Card */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}

.project-card:hover {
  border-color: var(--border-active);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.project-card--featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.project-card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-tertiary);
}

.project-card__image--mobile {
  aspect-ratio: 4 / 3;
}

.project-card__image--mobile img {
  object-fit: contain;
  background: var(--bg-tertiary);
  padding: var(--space-sm);
}

.project-card--featured .project-card__image {
  aspect-ratio: auto;
  min-height: 400px;
}

.project-card__image--clickable {
  cursor: pointer;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__link {
  width: 50px;
  height: 50px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: transform var(--transition);
}

.project-card__link svg {
  width: 20px;
  height: 20px;
  color: #fff;
}

.project-card:hover .project-card__link {
  transform: scale(1);
}

.project-card__overlay--gallery {
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.project-card__gallery-hint {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.project-card__gallery-hint:hover {
  background: rgba(255, 255, 255, 0.2);
}

.project-card__live-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  color: #10b981;
  font-size: 0.8rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.project-card__body {
  padding: var(--space-xl);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tag {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tag--next {
  background: rgba(0, 0, 0, 0.3);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.tag--react {
  background: rgba(97, 218, 251, 0.1);
  color: #61dafb;
  border: 1px solid rgba(97, 218, 251, 0.2);
}

.tag--html {
  background: rgba(227, 76, 38, 0.1);
  color: #e34c26;
  border: 1px solid rgba(227, 76, 38, 0.2);
}

.tag--css {
  background: rgba(38, 77, 228, 0.1);
  color: #264de4;
  border: 1px solid rgba(38, 77, 228, 0.2);
}

.tag--js {
  background: rgba(240, 219, 79, 0.1);
  color: #f0db4f;
  border: 1px solid rgba(240, 219, 79, 0.2);
}

.tag--seo {
  background: rgba(52, 168, 83, 0.1);
  color: #34a853;
  border: 1px solid rgba(52, 168, 83, 0.2);
}

.tag--django {
  background: rgba(9, 46, 32, 0.3);
  color: #44b78b;
  border: 1px solid rgba(68, 183, 139, 0.2);
}

.tag--flutter {
  background: rgba(66, 165, 245, 0.1);
  color: #42a5f5;
  border: 1px solid rgba(66, 165, 245, 0.2);
}

.tag--python {
  background: rgba(55, 118, 171, 0.1);
  color: #3776ab;
  border: 1px solid rgba(55, 118, 171, 0.2);
}

.tag--postgres {
  background: rgba(51, 103, 145, 0.1);
  color: #336791;
  border: 1px solid rgba(51, 103, 145, 0.2);
}

.tag--1c {
  background: rgba(255, 193, 7, 0.1);
  color: #ffc107;
  border: 1px solid rgba(255, 193, 7, 0.2);
}

.tag--ai {
  background: rgba(168, 85, 247, 0.1);
  color: #a855f7;
  border: 1px solid rgba(168, 85, 247, 0.2);
}

[data-theme="light"] .tag--next {
  background: rgba(0, 0, 0, 0.06);
  color: #333;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.project-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.project-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.feature-tag {
  padding: 6px 12px;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.project-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.project-card__type {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.project-card__visit {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-1);
  transition: all var(--transition);
}

.project-card__visit:hover {
  color: var(--accent-2);
}

.project-card__badge-seo {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 8px 16px;
  background: rgba(10, 10, 15, 0.85);
  border: 1px solid rgba(52, 168, 83, 0.5);
  border-radius: var(--radius-sm);
  color: #4ade80;
  font-size: 0.8rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
  z-index: 2;
  letter-spacing: 0.02em;
}

[data-theme="light"] .project-card__badge-seo {
  background: rgba(255, 255, 255, 0.9);
  color: #16a34a;
  border-color: rgba(52, 168, 83, 0.4);
}

/* ═══════════════════════════════════════
   TECHNOLOGIES
   ═══════════════════════════════════════ */
.tech {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
  transition: background var(--transition);
}

.tech__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-md);
}

.tech__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  cursor: default;
}

.tech__item:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.tech__icon {
  font-size: 2rem;
  line-height: 1;
}

.tech__name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
}

/* ═══════════════════════════════════════
   ADVANTAGES
   ═══════════════════════════════════════ */
.advantages {
  padding: var(--space-4xl) 0;
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-xl);
}

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

.adv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.adv-card:hover::before {
  transform: scaleX(1);
}

.adv-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.adv-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
}

.adv-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.adv-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════ */
.contact {
  padding: var(--space-4xl) 0;
  background: var(--bg-secondary);
  transition: background var(--transition);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__info-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

.contact__channel:hover {
  border-color: var(--border-active);
  transform: translateX(4px);
}

.contact__channel-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact__channel-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-bottom: 2px;
}

.contact__channel-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Contact Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: calc(1.3rem * 1.6 + var(--space-xl)); /* Align with right block title */
}

@media (max-width: 900px) {
  .contact__form {
    margin-top: 0;
  }
}

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(124, 92, 252, 0.1);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__form-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: var(--space-sm);
}

/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */
.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.1rem;
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* ═══════════════════════════════════════
   REVEAL ANIMATIONS
   ═══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

/* Stagger children */
.projects__grid .reveal:nth-child(2) {
  transition-delay: 0.1s;
}

.projects__grid .reveal:nth-child(3) {
  transition-delay: 0.2s;
}

.projects__grid .reveal:nth-child(4) {
  transition-delay: 0.3s;
}

.tech__grid .tech__item:nth-child(2) {
  transition-delay: 0.05s;
}

.tech__grid .tech__item:nth-child(3) {
  transition-delay: 0.1s;
}

.tech__grid .tech__item:nth-child(4) {
  transition-delay: 0.15s;
}

.tech__grid .tech__item:nth-child(5) {
  transition-delay: 0.2s;
}

.tech__grid .tech__item:nth-child(6) {
  transition-delay: 0.25s;
}

.advantages__grid .adv-card:nth-child(2) {
  transition-delay: 0.1s;
}

.advantages__grid .adv-card:nth-child(3) {
  transition-delay: 0.2s;
}

.advantages__grid .adv-card:nth-child(4) {
  transition-delay: 0.3s;
}

/* ═══════════════════════════════════════
   PROJECT FILTER ANIMATION
   ═══════════════════════════════════════ */
.project-card[data-hidden="true"] {
  display: none;
}

.projects__category[data-hidden="true"] {
  display: none;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 1024px) {
  .project-card--featured {
    grid-template-columns: 1fr;
  }

  .project-card--featured .project-card__image {
    min-height: 250px;
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    z-index: 999;
  }

  .nav__links.open {
    display: flex;
  }

  .nav__link {
    font-size: 1.2rem;
  }

  .nav__burger {
    display: flex;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

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

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

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

  .hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .category-header {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

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

  .hero {
    padding: 100px 0 60px;
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .tech__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }

  .tech__item {
    padding: var(--space-md) var(--space-sm);
  }

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

/* ═══════════════════════════════════════
   PLACEHOLDER IMAGE FALLBACK
   ═══════════════════════════════════════ */
.project-card__image img[src=""],
.project-card__image img:not([src]) {
  display: none;
}

.project-card__image {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  position: relative;
}

.project-card__image::before {
  content: '📷';
  font-size: 2rem;
  position: absolute;
  z-index: 0;
  opacity: 0.3;
}

.project-card__image img {
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════════
   GALLERY MODAL
   ═══════════════════════════════════════ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

body.modal-open {
  overflow: hidden;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.modal__content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s var(--ease);
}

.modal.open .modal__content {
  transform: scale(1) translateY(0);
}

.modal__close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  z-index: 10;
}

.modal__close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.modal__title {
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.modal__carousel {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.modal__slides {
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  max-height: 70vh;
}

.modal__slides img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  display: none;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  animation: modalFadeIn 0.3s var(--ease);
}

.modal__slides img.active {
  display: block;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal__arrow {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.modal__arrow:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.1);
}

.modal__arrow svg {
  width: 20px;
  height: 20px;
}

.modal__dots {
  display: flex;
  gap: 8px;
  margin-top: var(--space-lg);
  justify-content: center;
}

.modal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.modal__dot.active {
  background: #fff;
  transform: scale(1.3);
}

.modal__counter {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  margin-top: var(--space-sm);
}

@media (max-width: 768px) {
  .modal__content {
    width: 95%;
  }

  .modal__arrow {
    width: 36px;
    height: 36px;
  }

  .modal__close {
    top: -45px;
    right: 5px;
  }

  .modal__title {
    font-size: 1.1rem;
  }
}