/* =============================================================
   DESIGN SYSTEM — Compost Software House
   software.akademikompos.com
   
   Premium dark mode: matte black + brushed titanium + brushed gold
   Typography: Playfair Display (headings) + Inter (body)
   ============================================================= */

/* =============================================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ============================================================= */
:root {
  /* --- Palette: Matte Black & Metallic --- */
  --bg-base: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1a1a1a;
  --bg-input: #1a1a1a;
  --bg-input-focus: #1e1e1e;

  /* --- Metallic Accents --- */
  --titanium: #c8c8c8;
  --titanium-dim: #a3a3a3;
  --titanium-muted: #6b6b6b;
  --gold: #c5a880;
  --gold-bright: #d4b896;
  --gold-dim: #a08a6a;
  --gold-rgb: 197, 168, 128;

  /* --- Text --- */
  --text-primary: #f0f0f0;
  --text-secondary: #a3a3a3;
  --text-muted: #6b6b6b;
  --text-inverse: #0a0a0a;

  /* --- Borders --- */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(197, 168, 128, 0.3);
  --border-focus: rgba(197, 168, 128, 0.5);

  /* --- Status Colors --- */
  --status-success: #10b981;
  --status-warning: #f59e0b;
  --status-danger: #ef4444;
  --status-info: #3b82f6;

  /* --- Typography --- */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* --- Font Sizes (fluid) --- */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  /* --- 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;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.7);
  --shadow-gold: 0 0 30px rgba(197, 168, 128, 0.15);
  --shadow-glow: 0 0 20px rgba(197, 168, 128, 0.2);

  /* --- Border Radius --- */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: all 0.2s var(--ease-in-out);
  --transition-normal: all 0.35s var(--ease-out);
  --transition-slow: all 0.5s var(--ease-out);

  /* --- Glassmorphism --- */
  --glass-bg: rgba(17, 17, 17, 0.7);
  --glass-blur: blur(20px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);

  /* --- Z-Index Scale --- */
  --z-dropdown: 100;
  --z-navbar: 500;
  --z-modal-backdrop: 900;
  --z-modal: 1000;
  --z-toast: 1100;
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--gold-bright);
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::selection {
  background: rgba(197, 168, 128, 0.3);
  color: var(--text-primary);
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--titanium-muted);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--titanium-dim);
}


/* =============================================================
   3. TYPOGRAPHY
   ============================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-5xl); margin-bottom: var(--space-lg); }
h2 { font-size: var(--text-4xl); margin-bottom: var(--space-md); }
h3 { font-size: var(--text-3xl); margin-bottom: var(--space-md); }
h4 { font-size: var(--text-2xl); margin-bottom: var(--space-sm); }
h5 { font-size: var(--text-xl); margin-bottom: var(--space-sm); }
h6 { font-size: var(--text-lg); margin-bottom: var(--space-sm); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

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

.heading-accent {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  display: inline-block;
}


/* =============================================================
   4. LAYOUT UTILITIES
   ============================================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1400px;
}

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

.grid {
  display: grid;
  gap: var(--space-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); }

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

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

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


/* =============================================================
   5. NAVBAR
   ============================================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-navbar);
  padding: var(--space-lg) 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-md);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.navbar-brand .brand-accent {
  color: var(--gold);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.navbar-nav a:not(.btn) {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  padding: var(--space-xs) 0;
  transition: var(--transition-fast);
}

.navbar-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s var(--ease-out);
}

.navbar-nav a:not(.btn):hover,
.navbar-nav a:not(.btn).active {
  color: var(--text-primary);
}

.navbar-nav a:not(.btn):hover::after,
.navbar-nav a:not(.btn).active::after {
  width: 100%;
}

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

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}


/* =============================================================
   6. BUTTONS
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-dim) 0%, var(--gold) 50%, var(--gold-bright) 100%);
  color: var(--text-inverse);
  box-shadow: 0 4px 16px rgba(var(--gold-rgb), 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(var(--gold-rgb), 0.4);
  color: var(--text-inverse);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid rgba(var(--gold-rgb), 0.4);
}

.btn-outline:hover {
  background: rgba(var(--gold-rgb), 0.1);
  border-color: var(--gold);
  transform: translateY(-2px);
  color: var(--gold-bright);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
  background: var(--status-danger);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
  color: #fff;
}

.btn-success {
  background: var(--status-success);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-2px);
  color: #fff;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: var(--text-base);
}

.btn-wa {
  background: #25d366;
  color: #fff;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
}

.btn-wa:hover {
  background: #22c55e;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  color: #fff;
}


/* =============================================================
   7. CARDS
   ============================================================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-normal);
}

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

.card-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--border-subtle);
}

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

.card-category {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  line-height: 1.3;
}

.card-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.card-price {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--gold);
}

.card-price .price-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--text-muted);
  display: block;
}

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


/* =============================================================
   8. FORM ELEMENTS
   ============================================================= */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.form-label .required {
  color: var(--status-danger);
  margin-left: 2px;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--gold);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(var(--gold-rgb), 0.15);
}

.form-control::placeholder {
  color: var(--text-muted);
}

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a3a3a3' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-control.is-invalid {
  border-color: var(--status-danger);
}

.invalid-feedback {
  font-size: var(--text-xs);
  color: var(--status-danger);
  margin-top: var(--space-xs);
}


/* =============================================================
   9. BADGES
   ============================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge i {
  font-size: 0.65rem;
}


/* =============================================================
   10. ALERTS / FLASH MESSAGES
   ============================================================= */
.alert {
  position: fixed;
  top: 95px;
  right: var(--space-xl);
  z-index: var(--z-toast);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border: 1px solid transparent;
  box-shadow: var(--shadow-lg);
  max-width: 450px;
  animation: toastSlideIn 0.3s var(--ease-out);
}

@keyframes toastSlideIn {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.alert i {
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.alert-success {
  background: #0d1e17;
  color: var(--status-success);
  border-color: rgba(16, 185, 129, 0.3);
}

.alert-error {
  background: #1c0e0e;
  color: var(--status-danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.alert-warning {
  background: #1f170b;
  color: var(--status-warning);
  border-color: rgba(245, 158, 11, 0.3);
}

.alert-info {
  background: #0f172a;
  color: var(--status-info);
  border-color: rgba(59, 130, 246, 0.3);
}


/* =============================================================
   11. TABLES
   ============================================================= */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.table th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  white-space: nowrap;
}

.table td {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: middle;
}

.table tbody tr {
  transition: var(--transition-fast);
}

.table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.table tbody tr:hover td {
  color: var(--text-primary);
}


/* =============================================================
   12. FOOTER
   ============================================================= */
.footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.footer-brand .brand-accent {
  color: var(--gold);
}

.footer-desc {
  color: var(--text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: 360px;
}

.footer-heading {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--titanium-dim);
  margin-bottom: var(--space-lg);
}

.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: var(--text-sm);
  padding: var(--space-xs) 0;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--gold);
  padding-left: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--gold-dim);
}

.footer-bottom a:hover {
  color: var(--gold);
}


/* =============================================================
   13. PAGINATION
   ============================================================= */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  transition: var(--transition-fast);
  text-decoration: none;
}

.pagination a:hover {
  border-color: var(--border-hover);
  color: var(--gold);
  background: rgba(var(--gold-rgb), 0.05);
}

.pagination .active {
  background: var(--gold);
  color: var(--text-inverse);
  border-color: var(--gold);
  font-weight: 700;
}


/* =============================================================
   14. UTILITY CLASSES
   ============================================================= */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  border-radius: var(--radius-full);
  margin: var(--space-md) 0 var(--space-xl);
}

.divider-center {
  margin-left: auto;
  margin-right: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
}


/* =============================================================
   15. RESPONSIVE BREAKPOINTS
   ============================================================= */
@media (max-width: 1024px) {
  :root {
    --text-5xl: 2.75rem;
    --text-4xl: 2rem;
    --text-3xl: 1.625rem;
  }

  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.375rem;
    --space-4xl: 4rem;
    --space-3xl: 3rem;
  }

  .container { padding: 0 var(--space-md); }
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }

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

  .navbar-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-elevated);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem var(--space-xl) var(--space-xl);
    gap: var(--space-md);
    transition: right 0.4s var(--ease-out);
    border-left: 1px solid var(--border-subtle);
    z-index: calc(var(--z-navbar) + 1);
  }

  .navbar-nav.open {
    right: 0;
  }

  .navbar-nav a {
    font-size: var(--text-base);
    width: 100%;
    padding: var(--space-sm) 0;
  }

  .mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: var(--z-navbar);
  }

  .mobile-overlay.show {
    display: block;
  }
}

@media (max-width: 480px) {
  :root {
    --text-5xl: 1.875rem;
    --text-4xl: 1.5rem;
  }

  .btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--text-sm);
  }
}