/* ========================================
   DESIGN SYSTEM — Kiyim-Kechak Do'koni
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Primary Palette — Premium Teal */
  --clr-bg-primary: #0A1A1F;
  --clr-bg-secondary: #0F2830;
  --clr-accent: #1B6B7D;
  --clr-accent-light: #22A5BB;
  --clr-mid: #3D8A9A;
  --clr-light: #B0D4DC;
  --clr-gray: #5A6D75;

  /* Gold Accent */
  --clr-gold: #D4A847;
  --clr-gold-light: #F0D78C;

  /* Semantic Colors */
  --clr-text-primary: #ECF0F2;
  --clr-text-secondary: #9BB0B8;
  --clr-text-muted: #5C7A85;
  --clr-surface: rgba(15, 40, 48, 0.85);
  --clr-surface-solid: #0F2830;
  --clr-surface-hover: #153540;
  --clr-border: rgba(59, 138, 154, 0.15);
  --clr-border-hover: rgba(59, 138, 154, 0.35);

  /* Accent Colors */
  --clr-success: #34D399;
  --clr-warning: #FBBF24;
  --clr-error: #F87171;
  --clr-info: #60A5FA;

  /* Glass Effect */
  --glass-bg: rgba(15, 40, 48, 0.6);
  --glass-border: rgba(59, 138, 154, 0.12);
  --glass-blur: 24px;
  --glass-highlight: rgba(255, 255, 255, 0.04);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3.5rem;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* 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: 18px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows — Premium with colored glow */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25), 0 0 40px rgba(27, 107, 125, 0.05);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 60px rgba(27, 107, 125, 0.08);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 80px rgba(27, 107, 125, 0.1);
  --shadow-glow: 0 0 30px rgba(27, 107, 125, 0.25);
  --shadow-glow-gold: 0 0 30px rgba(212, 168, 71, 0.2);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 450ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1280px;
  --container-padding: 1.5rem;
  --navbar-height: 72px;
}

/* --- Light Mode --- */
[data-theme="light"] {
  --clr-bg-primary: #F3F6F9;
  --clr-bg-secondary: #FFFFFF;
  --clr-accent: #1B6B7D;
  --clr-accent-light: #22A5BB;
  --clr-mid: #3D8A9A;
  --clr-light: #1A3540;
  --clr-gray: #8899A4;

  --clr-gold: #B8922F;
  --clr-gold-light: #D4A847;

  --clr-text-primary: #0F2830;
  --clr-text-secondary: #3A5A66;
  --clr-text-muted: #6A8A96;
  --clr-surface: rgba(255, 255, 255, 0.95);
  --clr-surface-solid: #FFFFFF;
  --clr-surface-hover: #EBF2F5;
  --clr-border: rgba(27, 107, 125, 0.1);
  --clr-border-hover: rgba(27, 107, 125, 0.25);

  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(27, 107, 125, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.5);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06), 0 0 40px rgba(27, 107, 125, 0.03);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08), 0 0 60px rgba(27, 107, 125, 0.04);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.1), 0 0 80px rgba(27, 107, 125, 0.06);
  --shadow-glow: 0 0 30px rgba(27, 107, 125, 0.12);
  --shadow-glow-gold: 0 0 30px rgba(212, 168, 71, 0.1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: 1.6;
  color: var(--clr-text-primary);
  background-color: var(--clr-bg-primary);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(27, 107, 125, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(61, 138, 154, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(212, 168, 71, 0.02) 0%, transparent 40%);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--clr-light);
}

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
  border: none;
  background: none;
}

/* --- Dark Mode Switch --- */
.dark-mode-toggle {
  background: none;
  border: none;
  font-size: var(--fs-xl);
  cursor: pointer;
  color: var(--clr-text-secondary);
  transition: transform var(--transition-spring), color var(--transition-fast);
}

.dark-mode-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  color: var(--clr-text-primary);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-mid);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-mid);
}

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

.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Grid System --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-5 {
  grid-template-columns: repeat(5, 1fr);
}

/* --- Flexbox Utilities --- */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

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

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-xs {
  gap: var(--space-xs);
}

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

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

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

.gap-2xl {
  gap: var(--space-2xl);
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
}

h1 {
  font-size: var(--fs-4xl);
}

h2 {
  font-size: var(--fs-3xl);
}

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

h4 {
  font-size: var(--fs-xl);
}

h5 {
  font-size: var(--fs-lg);
}

h6 {
  font-size: var(--fs-md);
}

.text-xs {
  font-size: var(--fs-xs);
}

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

.text-base {
  font-size: var(--fs-base);
}

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

.text-lg {
  font-size: var(--fs-lg);
}

.text-xl {
  font-size: var(--fs-xl);
}

.text-2xl {
  font-size: var(--fs-2xl);
}

.text-light {
  font-weight: var(--fw-light);
}

.text-medium {
  font-weight: var(--fw-medium);
}

.text-semibold {
  font-weight: var(--fw-semibold);
}

.text-bold {
  font-weight: var(--fw-bold);
}

.text-muted {
  color: var(--clr-text-muted);
}

.text-secondary {
  color: var(--clr-text-secondary);
}

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

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Spacing Utilities --- */
.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mt-xl {
  margin-top: var(--space-xl);
}

.mt-2xl {
  margin-top: var(--space-2xl);
}

.mt-3xl {
  margin-top: var(--space-3xl);
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.mb-xl {
  margin-bottom: var(--space-xl);
}

.mb-2xl {
  margin-bottom: var(--space-2xl);
}

.mb-3xl {
  margin-bottom: var(--space-3xl);
}

.pt-sm {
  padding-top: var(--space-sm);
}

.pt-md {
  padding-top: var(--space-md);
}

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

.pt-xl {
  padding-top: var(--space-xl);
}

.section-padding {
  padding: var(--space-4xl) 0;
}

/* --- Animations --- */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-32px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(32px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

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

@keyframes pulse {

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

  50% {
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-fade-in-down {
  animation: fadeInDown var(--transition-slow) ease-out;
}

.animate-slide-left {
  animation: slideInLeft var(--transition-slow) ease-out;
}

.animate-slide-right {
  animation: slideInRight var(--transition-slow) ease-out;
}

.animate-scale-in {
  animation: scaleIn var(--transition-spring);
}

/* Staggered Animation */
.stagger>* {
  opacity: 0;
  animation: fadeInUp 0.5s ease-out forwards;
}

.stagger>*:nth-child(1) {
  animation-delay: 0.05s;
}

.stagger>*:nth-child(2) {
  animation-delay: 0.1s;
}

.stagger>*:nth-child(3) {
  animation-delay: 0.15s;
}

.stagger>*:nth-child(4) {
  animation-delay: 0.2s;
}

.stagger>*:nth-child(5) {
  animation-delay: 0.25s;
}

.stagger>*:nth-child(6) {
  animation-delay: 0.3s;
}

.stagger>*:nth-child(7) {
  animation-delay: 0.35s;
}

.stagger>*:nth-child(8) {
  animation-delay: 0.4s;
}

/* Intersection Observer Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* --- Page Layout --- */
.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-content {
  flex: 1;
  padding-top: var(--navbar-height);
}

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

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header .section-subtitle {
  color: var(--clr-text-muted);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
}

.section-header .section-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-mid));
  margin: var(--space-md) auto 0;
  border-radius: var(--radius-full);
}

/* --- Responsive Breakpoints --- */
@media (max-width: 1024px) {
  :root {
    --fs-4xl: 2.5rem;
    --fs-3xl: 2rem;
  }

  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --fs-4xl: 2rem;
    --fs-3xl: 1.75rem;
    --fs-2xl: 1.5rem;
    --container-padding: 1rem;
    --navbar-height: 64px;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hide-mobile {
    display: none !important;
  }
}

@media (max-width: 480px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* --- Skeleton Loading --- */
.skeleton {
  background: linear-gradient(90deg, var(--clr-surface) 25%, var(--clr-accent) 50%, var(--clr-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}