/* ============================================
   TBS - Thamizhandu Brahmana Samajam
   Design System & Styles
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Colors - Extracted from banner */
  --color-primary: #E67E22;
  /* Saffron Orange */
  --color-primary-dark: #D35400;
  /* Deep Orange */
  --color-secondary: #F39C12;
  /* Golden Yellow */
  --color-accent: #C9A227;
  /* Gold */
  --color-background: #FFFBF0;
  /* Warm Cream */
  --color-background-alt: #FFF5E6;
  --color-text: #5D4E37;
  /* Warm Brown */
  --color-text-light: #8B7355;
  --color-white: #FFFFFF;
  --color-border: #E8D5B7;
  --color-success: #27AE60;
  --color-error: #C0392B;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(93, 78, 55, 0.1);
  --shadow-md: 0 4px 12px rgba(93, 78, 55, 0.15);
  --shadow-lg: 0 8px 24px rgba(93, 78, 55, 0.2);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Container */
  --container-max: 1200px;
  --header-height: 80px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

ul,
ol {
  list-style: none;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

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

/* ---------- Header & Navigation ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.logo img {
  height: 60px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-list {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--color-white);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.nav-cta {
  background: var(--color-white);
  color: var(--color-primary) !important;
  padding: var(--spacing-sm) var(--spacing-lg) !important;
  font-weight: 600;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
  background: var(--color-background);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------- Banner Section ---------- */
.banner {
  width: 100%;
  margin-top: var(--header-height);
}

.banner img {
  width: 100%;
  height: auto;
}

/* ---------- Hero Section ---------- */
.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, var(--color-background-alt) 0%, var(--color-background) 100%);
  text-align: center;
}

.hero h1 {
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-white);
}

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

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

.btn-accent {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- Sections ---------- */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background: var(--color-background-alt);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
  padding-bottom: var(--spacing-md);
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--radius-sm);
}

.section-title p {
  color: var(--color-text-light);
  margin-top: var(--spacing-md);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
}

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

.card-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
  color: var(--color-white);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ---------- Grid Layouts ---------- */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

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

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

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

/* ---------- Profile Cards ---------- */
.profile-card {
  text-align: center;
  padding: var(--spacing-xl);
}

.profile-photo {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin: 0 auto var(--spacing-lg);
  border: 4px solid var(--color-primary);
  box-shadow: var(--shadow-md);
  background: var(--color-background-alt);
}

.profile-name {
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-xs);
}

.profile-role {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* ---------- Quote / Message ---------- */
.quote-block {
  background: linear-gradient(135deg, var(--color-background-alt) 0%, var(--color-white) 100%);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-xl);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin: var(--spacing-xl) 0;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--color-text-light);
}

/* ---------- Donation Section ---------- */
.donation-tier {
  text-align: center;
  padding: var(--spacing-2xl);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.donation-tier:hover {
  border-color: var(--color-primary);
}

.donation-tier.featured {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, var(--color-background-alt) 0%, var(--color-white) 100%);
  transform: scale(1.05);
}

.donation-amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

.donation-amount span {
  font-size: 1rem;
  color: var(--color-text-light);
}

/* ---------- Bank Details ---------- */
.bank-details {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.bank-details table {
  width: 100%;
}

.bank-details th,
.bank-details td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.bank-details th {
  color: var(--color-text-light);
  font-weight: 500;
  width: 40%;
}

.bank-details td {
  font-weight: 600;
  color: var(--color-text);
}

/* ---------- Footer ---------- */
.footer {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.125rem;
}

.footer-section p,
.footer-section li {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9375rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.9);
}

.footer-section a:hover {
  color: var(--color-secondary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ---------- Page Header (Inner Pages) ---------- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  padding: var(--spacing-3xl) 0;
  margin-top: var(--header-height);
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.page-header p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-md);
  font-size: 0.875rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.breadcrumb span {
  color: rgba(255, 255, 255, 0.6);
}

/* ---------- Activity / Event Cards ---------- */
.event-card {
  display: flex;
  gap: var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.event-date {
  flex-shrink: 0;
  width: 80px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
}

.event-date .day {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.event-date .month {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.event-content {
  padding: var(--spacing-lg);
  flex: 1;
}

.event-content h3 {
  margin-bottom: var(--spacing-sm);
}

.event-content p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9375rem;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

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

.cta-section .btn:hover {
  background: var(--color-background);
}

/* ---------- Utilities ---------- */
.text-center {
  text-align: center;
}

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

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

.mt-1 {
  margin-top: var(--spacing-md);
}

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

.mt-3 {
  margin-top: var(--spacing-2xl);
}

.mb-1 {
  margin-bottom: var(--spacing-md);
}

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

.mb-3 {
  margin-bottom: var(--spacing-2xl);
}

/* ---------- Responsive Styles ---------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  /* Mobile Navigation */
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    flex-direction: column;
    padding: var(--spacing-xl);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
  }

  .nav.active {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md);
    text-align: center;
    font-size: 1.125rem;
  }

  .nav-cta {
    margin-top: var(--spacing-lg);
    width: 100%;
    text-align: center;
  }

  /* Grid */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  /* Event cards */
  .event-card {
    flex-direction: column;
  }

  .event-date {
    width: 100%;
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
  }

  /* Donation tiers */
  .donation-tier.featured {
    transform: none;
  }

  /* Page header */
  .page-header {
    padding: var(--spacing-2xl) 0;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }
}

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

  .logo-text {
    font-size: 1rem;
  }

  .logo img {
    height: 50px;
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
  }
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Staggered animation for cards */
.card:nth-child(1) {
  animation-delay: 0.1s;
}

.card:nth-child(2) {
  animation-delay: 0.2s;
}

.card:nth-child(3) {
  animation-delay: 0.3s;
}

.card:nth-child(4) {
  animation-delay: 0.4s;
}

/* ---------- Language Toggle ---------- */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-left: auto;
  margin-right: var(--spacing-md);
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.lang-btn {
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 700;
  font-family: var(--font-heading);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  min-width: 45px;
  text-align: center;
}

.lang-btn:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.2);
}

.lang-btn.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Language Content Visibility */
/* By default (no JS), show both languages */
.lang-en,
.lang-ta {
  display: inline;
}

/* When English is selected */
html[data-lang="en"] .lang-ta {
  display: none;
}

/* When Tamil is selected */
html[data-lang="ta"] .lang-en {
  display: none;
}

/* Tamil text styling - slightly different for distinction */
.lang-ta {
  font-style: normal;
}

/* For block-level bilingual content */
.bilingual {
  display: block;
}

.bilingual .lang-en,
.bilingual .lang-ta {
  display: block;
}

html[data-lang="en"] .bilingual .lang-ta {
  display: none;
}

html[data-lang="ta"] .bilingual .lang-en {
  display: none;
}

/* Mobile Language Toggle */
@media (max-width: 768px) {
  .lang-toggle {
    position: absolute;
    top: 50%;
    right: 70px;
    transform: translateY(-50%);
    margin-left: 0;
    margin-right: 0;
  }

  .lang-btn {
    padding: 5px 8px;
    font-size: 0.8rem;
    min-width: 36px;
  }
}

@media (max-width: 480px) {
  .lang-toggle {
    right: 55px;
  }

  .lang-btn {
    padding: 4px 6px;
    font-size: 0.75rem;
    min-width: 30px;
  }
}