/* ============================================
   Modern Design System - DP Daulat
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
  /* Colors - Modern Teal & Coral Theme */
  --primary-color: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #14b8a6;
  --secondary-color: #64748b;
  --accent-color: #f97316;
  --accent-light: #fb923c;
  --text-dark: #0f172a;
  --text-light: #475569;
  --bg-light: #f0fdfa;
  --bg-white: #ffffff;
  --border-color: #cbd5e1;
  --header-bg: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  --footer-bg: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
  --shadow-sm: 0 1px 2px 0 rgba(13, 148, 136, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(13, 148, 136, 0.15), 0 2px 4px -1px rgba(13, 148, 136, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(13, 148, 136, 0.2), 0 4px 6px -2px rgba(13, 148, 136, 0.15);
  --shadow-xl: 0 20px 25px -5px rgba(13, 148, 136, 0.25), 0 10px 10px -5px rgba(13, 148, 136, 0.2);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Animations (subtle + accessible) */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-down {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Continuous (transform-only) motion for subtle dynamism */
@keyframes hero-float {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(8px, -6px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header & Navigation */
header {
  background: var(--header-bg);
  color: var(--text-dark);
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: fade-down 520ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 1001;
  color: var(--text-dark);
  transition: color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  color: var(--primary-color);
}

.mobile-menu-toggle svg {
  width: 28px;
  height: 28px;
  display: block;
}

.mobile-menu-toggle .close-icon {
  display: none;
}

.mobile-menu-toggle.active .menu-icon {
  display: none;
}

.mobile-menu-toggle.active .close-icon {
  display: block;
}

.logo-link {
  display: inline-block;
  transition: transform var(--transition-fast);
  background: transparent;
}

.logo-link:hover {
  transform: scale(1.05);
}

.logo {
  height: 100px;
  width: auto;
  max-width: 250px;
  object-fit: contain;
  display: block;
  background: transparent !important;
  background-color: transparent !important;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

header h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text-dark);
}

nav {
  width: 100%;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

nav ul li {
  margin: 0;
}

nav ul li a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-dark);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
  position: relative;
  will-change: transform;
}

nav ul li a:hover {
  background-color: rgba(13, 148, 136, 0.1);
  transform: translateY(-1px);
}

nav ul li a.active {
  background-color: rgba(13, 148, 136, 0.15);
  color: var(--primary-color);
}

nav ul li a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background-color: var(--accent-color);
  border-radius: 2px;
}

/* Animated underline on hover (kept subtle, no layout shifts) */
nav ul li a::before {
  content: '';
  position: absolute;
  left: 18%;
  right: 18%;
  bottom: 8px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  opacity: 0;
  transform: scaleX(0.6);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  pointer-events: none;
}

nav ul li a:hover::before {
  opacity: 0.25;
  transform: scaleX(1);
}

/* Main Content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  min-height: calc(100vh - 300px);
  animation: fade-up 560ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  background: linear-gradient(135deg, #f8fffe 0%, #e8f7f4 55%, #eef6ff 100%);
  color: var(--text-dark);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.hero-art {
  position: absolute;
  /* Overscan to prevent 1px seams when parallax transform is applied */
  inset: -8px;
  background: url("hero.svg") center / cover no-repeat;
  opacity: 0.18;
  filter: saturate(0.95) contrast(1.05);
  pointer-events: none;
  z-index: 0;
  will-change: transform, opacity;
}

.hero-logo {
  width: min(420px, 72vw);
  margin: 0 auto var(--spacing-lg);
  position: relative;
  transform-origin: center;
  will-change: transform, opacity;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.18));
  animation: scale-in 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.hero h1 {
  animation: fade-up 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  animation-delay: 80ms;
}

.hero p {
  animation: fade-up 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  animation-delay: 140ms;
}

.hero-buttons {
  animation: fade-up 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  animation-delay: 220ms;
}

.hero-logo::before {
  content: '';
  position: absolute;
  inset: -18%;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.75) 0%, rgba(255, 255, 255, 0.2) 38%, transparent 62%),
    radial-gradient(circle at 75% 70%, rgba(13, 148, 136, 0.18) 0%, transparent 55%);
  border-radius: 999px;
  filter: blur(2px);
  opacity: 0.9;
  pointer-events: none;
}

.hero-logo img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  /* Overscan to prevent sub-pixel edge seams on mobile */
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  background: radial-gradient(circle at 20% 40%, rgba(13, 148, 136, 0.14) 0%, transparent 55%),
              radial-gradient(circle at 85% 85%, rgba(59, 130, 246, 0.10) 0%, transparent 60%);
  pointer-events: none;
  will-change: transform;
  animation: hero-float 10s ease-in-out infinite;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--text-dark);
}

.hero p {
  color: var(--text-light);
}

.hero-highlights {
  list-style: none;
  padding: 0;
  margin: 0 auto var(--spacing-lg);
  max-width: 720px;
  display: grid;
  gap: 0.5rem;
  color: var(--text-light);
}

.hero-highlights li {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(203, 213, 225, 0.7);
  border-radius: var(--radius-lg);
  padding: 0.6rem 0.9rem;
  box-shadow: var(--shadow-sm);
}

/* Make secondary button less “orange” on the hero */
.hero .btn-secondary {
  background-color: rgba(13, 148, 136, 0.08);
  color: var(--primary-dark);
  border: 2px solid rgba(13, 148, 136, 0.25);
}

.hero .btn-secondary:hover {
  background-color: rgba(13, 148, 136, 0.14);
  border-color: rgba(13, 148, 136, 0.35);
  transform: translateY(-2px);
}

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-align: center;
  will-change: transform;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translateY(0);
  filter: brightness(0.98);
}

.btn-secondary {
  background-color: var(--accent-color);
  color: var(--bg-white);
  border: 2px solid var(--accent-color);
}

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

/* Cards */
.card {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  animation: scale-in 220ms ease-out both;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

/* Gallery */
#gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

/* Search */
.search-container {
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

.search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  background-color: var(--bg-white);
  color: var(--text-dark);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  animation: scale-in 200ms ease-out both;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.15);
}

.search-input::placeholder {
  color: var(--text-light);
}

.media-container {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
  animation: fade-up 240ms ease-out both;
}

.media-container:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.gallery-media {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.gallery-media:hover {
  transform: scale(1.02);
}

.file-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--spacing-sm);
  text-align: center;
  color: var(--text-dark);
}

/* Table Styles */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-lg);
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  animation: scale-in 240ms ease-out both;
}

thead {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: var(--bg-white);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

tbody tr {
  transition: background-color var(--transition-fast);
  animation: fade-up 200ms ease-out both;
}

tbody tr:nth-child(even) {
  background-color: var(--bg-light);
}

tbody tr:hover {
  background-color: rgba(13, 148, 136, 0.1);
  transform: translateX(2px);
}

tbody tr:last-child td {
  border-bottom: none;
}

table a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

table a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Contact Page */
.contact-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  justify-items: center;
}

.contact-info-card {
  background-color: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 800px;
}

.contact-info-card h2 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-2xl);
}

.contact-info-card p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
  font-size: var(--font-size-base);
}

.contact-info-card strong {
  color: var(--text-dark);
  display: block;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}


/* Footer */
footer {
  background: var(--footer-bg);
  color: var(--bg-white);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-semibold);
}

.contact-info p {
  margin: var(--spacing-xs) 0;
  opacity: 0.9;
  font-size: var(--font-size-base);
}

/* Error Messages */
.error-message {
  background-color: #fee2e2;
  color: #991b1b;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin: var(--spacing-md) 0;
  border-left: 4px solid #dc2626;
}

/* Responsive Design */
@media (max-width: 767px) {
  :root {
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  header {
    padding: 0.5rem 0;
  }
  
  header h1 {
    font-size: var(--font-size-lg);
    line-height: 1.1;
  }
  
  .logo {
    height: 50px;
    max-width: 180px;
    background: transparent;
    background-color: transparent;
  }

  .brand {
    gap: 0.375rem;
  }

  .mobile-menu-toggle {
    padding: 0.5rem !important;
  }

  .mobile-menu-toggle svg {
    width: 26px;
    height: 26px;
  }
  
  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero-logo {
    width: min(320px, 80vw);
  }

  .hero-art {
    opacity: 0.12;
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero p {
    font-size: var(--font-size-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  #gallery {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-section {
    grid-template-columns: 1fr;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .header-container {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0 var(--spacing-sm);
    position: relative;
  }
  
  .mobile-menu-toggle {
    /* Force override of the base absolute positioning */
    position: absolute !important;
    top: 50% !important;
    right: var(--spacing-sm) !important;
    transform: translateY(-50%);
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
    justify-self: center;
    align-self: center;
    width: 100%;
    display: flex;
    justify-content: center;
  }
  
  nav {
    width: 100%;
    grid-column: 1 / -1;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    opacity: 0;
    visibility: hidden;
  }
  
  nav.active {
    max-height: 500px;
    opacity: 1;
    visibility: visible;
  }
  
  nav ul {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: 0.5rem 0;
  }
  
  nav ul li a {
    width: 100%;
    text-align: center;
    padding: 0.75rem var(--spacing-md);
  }
  
  table {
    font-size: var(--font-size-sm);
  }
  
  th, td {
    padding: var(--spacing-sm);
  }
  
  .contact-info h3,
  .contact-info p {
    font-size: var(--font-size-base);
  }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  #gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  #gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .header-container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    justify-content: initial;
    gap: var(--spacing-md);
  }
  
  .brand {
    grid-column: 2;
    justify-self: center;
  }

  .logo {
    height: 100px;
    background: transparent;
    background-color: transparent;
  }
  
  nav {
    width: auto;
    grid-column: 3;
    justify-self: end;
  }

  nav ul {
    justify-content: flex-end;
    flex-wrap: nowrap;
    gap: var(--spacing-sm);
  }

  nav ul li a {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-dark);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}