/* ==========================================================================
   CCam website styles (clean single-source)
   ========================================================================== */

/* =========================
   Design tokens / variables
   ========================= */

:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);

  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);

  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08);
  --color-bg-2: rgba(245, 158, 11, 0.08);
  --color-bg-3: rgba(34, 197, 94, 0.08);
  --color-bg-4: rgba(239, 68, 68, 0.08);
  --color-bg-5: rgba(147, 51, 234, 0.08);
  --color-bg-6: rgba(249, 115, 22, 0.08);
  --color-bg-7: rgba(236, 72, 153, 0.08);
  --color-bg-8: rgba(6, 182, 212, 0.08);

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);

  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);

  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);

  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);

  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);

  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);

  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);

  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;

  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* Status RGB (light) */
  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;

  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    --color-bg-1: rgba(29, 78, 216, 0.15);
    --color-bg-2: rgba(180, 83, 9, 0.15);
    --color-bg-3: rgba(21, 128, 61, 0.15);
    --color-bg-4: rgba(185, 28, 28, 0.15);
    --color-bg-5: rgba(107, 33, 168, 0.15);
    --color-bg-6: rgba(194, 65, 12, 0.15);
    --color-bg-7: rgba(190, 24, 93, 0.15);
    --color-bg-8: rgba(8, 145, 178, 0.15);

    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);

    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);

    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);

    --color-border: rgba(var(--color-gray-400-rgb), 0.3);

    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);

    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);

    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);

    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* Status RGB (dark) */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Manual theme switching via data attribute */
[data-color-scheme="dark"] {
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(167, 169, 169, 0.7);

  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);

  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-secondary-hover: rgba(119, 124, 124, 0.25);
  --color-secondary-active: rgba(119, 124, 124, 0.3);

  --color-border: rgba(119, 124, 124, 0.3);

  --color-btn-primary-text: var(--color-slate-900);
  --color-focus-ring: rgba(50, 184, 198, 0.4);

  --color-success: var(--color-teal-300);
  --color-error: var(--color-red-400);
  --color-warning: var(--color-orange-400);
  --color-info: rgba(167, 169, 169, 1);

  --color-success-rgb: 50, 184, 198;
  --color-error-rgb: 255, 84, 89;
  --color-warning-rgb: 230, 129, 97;
  --color-info-rgb: 167, 169, 169;

  --color-border-secondary: rgba(119, 124, 124, 0.2);
}

[data-color-scheme="light"] {
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);

  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);

  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);

  --color-border: rgba(var(--color-brown-600-rgb), 0.2);

  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* =========================
   Base / reset
   ========================= */

@font-face {
  font-family: "FKGroteskNeue";
  src: url("https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2")
    format("woff2");
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 0;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin: 0 0 var(--space-16) 0;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

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

/* Code blocks */
code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Focus */
:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* =========================
   Utilities
   ========================= */

.hidden {
  display: none;
}

.block {
  display: block;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* =========================
   Layout / container
   ========================= */

.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* ==========================================================================
   CCam site skin (cards, header, sections)
   ========================================================================== */

body {
  font-family: var(--font-family-base);
  background: linear-gradient(
    135deg,
    var(--color-teal-500) 0%,
    var(--color-teal-300) 100%
  );
  min-height: 100vh;
  padding: var(--space-20);
  color: var(--color-text);
}

.container {
  max-width: 700px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Header */
.header {
  background: linear-gradient(
    135deg,
    var(--color-teal-500) 0%,
    var(--color-teal-600) 100%
  );
  color: var(--color-btn-primary-text);
  padding: calc(var(--space-32) + var(--space-8)) var(--space-32);
  text-align: center;
}

.header h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-10);
  font-weight: var(--font-weight-bold);
}

.header .subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: calc(var(--space-12) + var(--space-4));
  opacity: 0.9;
  line-height: var(--line-height-normal);
}

.header .info-text {
  font-size: var(--font-size-base);
  opacity: 0.85;
  line-height: 1.6;
  max-width: 500px;
  margin: 0 auto;
}

/* Generic section paddings */
.upload-section,
.results-section {
  padding: var(--space-32);
}

.upload-section h2,
.results-section h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-semibold);
}

.help-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--space-24) + var(--space-1));
}

/* Top buttons section (index mostly) */
section.links-section {
  display: flex;
  gap: var(--space-12);
  padding: calc(var(--space-24) + var(--space-1)) var(--space-32);
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

/* Upload area (index verify) */
.upload-area {
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-base);
  padding: calc(var(--space-32) + var(--space-16) + var(--space-2))
    var(--space-32);
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  background: rgba(var(--color-teal-500-rgb), 0.04);
  margin-bottom: var(--space-20);
}

.upload-area:hover {
  border-color: var(--color-teal-300);
  background: rgba(var(--color-teal-500-rgb), 0.08);
  transform: translateY(-2px);
}

.upload-area.dragover {
  border-color: var(--color-teal-300);
  background: rgba(var(--color-teal-500-rgb), 0.12);
  box-shadow: 0 0 0 4px rgba(var(--color-teal-500-rgb), 0.1);
}

.upload-icon {
  font-size: calc(var(--font-size-4xl) + var(--space-16) + var(--space-2));
  margin-bottom: calc(var(--space-12) + var(--space-4));
}

.upload-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
}

.upload-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Selected file box */
.selected-file-info {
  background: rgba(var(--color-success-rgb), 0.08);
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
  border-radius: var(--radius-base);
  padding: calc(var(--space-12) + var(--space-4));
  margin-bottom: var(--space-20);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.selected-file-info p {
  color: var(--color-success);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-24);
  border: none;
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  flex: 1;
  min-width: 200px;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--color-teal-500-rgb), 0.4);
  text-decoration: none;
}

.btn-secondary {
  background: var(--color-teal-300);
  color: var(--color-btn-primary-text);
  flex: 1;
  min-width: 200px;
}

.btn-secondary:hover {
  background: var(--color-teal-400);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--color-teal-500-rgb), 0.25);
  text-decoration: none;
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-sm);
}

.btn-outline:hover {
  background: var(--color-secondary);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-verify {
  width: 100%;
  padding: calc(var(--space-12) + var(--space-2));
  font-size: var(--font-size-lg);
  background: linear-gradient(
    135deg,
    var(--color-teal-500) 0%,
    var(--color-teal-300) 100%
  );
  color: var(--color-btn-primary-text);
  margin-top: var(--space-10);
}

.btn-verify:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--color-teal-500-rgb), 0.4);
  text-decoration: none;
}

/* Close button (results) */
.btn-close {
  float: right;
  background: none;
  border: none;
  font-size: calc(var(--font-size-3xl) + var(--space-4));
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: var(--space-6);
  margin: calc(var(--space-6) * -1);
}

.btn-close:hover {
  color: var(--color-text);
}

/* ==========================================================================
   Loading spinner
   ========================================================================== */

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--space-32) + var(--space-24) + var(--space-4))
    var(--space-32);
  background: var(--color-background);
}

.spinner {
  width: calc(var(--space-32) + var(--space-16) + var(--space-2));
  height: calc(var(--space-32) + var(--space-16) + var(--space-2));
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-20);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-spinner p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  margin: 0;
}

/* ==========================================================================
   Results + details
   ========================================================================== */

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

.result-box {
  padding: var(--space-20);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-20);
  line-height: 1.6;
  animation: slideIn 0.4s var(--ease-standard);
}

.result-box.success {
  background: rgba(var(--color-success-rgb), var(--status-bg-opacity));
  border: 2px solid
    rgba(var(--color-success-rgb), var(--status-border-opacity));
  color: var(--color-success);
}

.result-box.error {
  background: rgba(var(--color-error-rgb), var(--status-bg-opacity));
  border: 2px solid rgba(var(--color-error-rgb), var(--status-border-opacity));
  color: var(--color-error);
}

.result-box.warning {
  background: rgba(var(--color-warning-rgb), var(--status-bg-opacity));
  border: 2px solid
    rgba(var(--color-warning-rgb), var(--status-border-opacity));
  color: var(--color-warning);
}

.result-box h3 {
  margin: 0 0 var(--space-8) 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

.result-box p {
  margin: 0;
  font-size: var(--font-size-base);
}

.file-hash {
  background: rgba(var(--color-slate-900-rgb), 0.05);
  padding: var(--space-12);
  border-radius: var(--radius-sm);
  margin-top: var(--space-12);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  word-break: break-all;
  user-select: all;
}

/* Photo details */
.photo-details {
  background: var(--color-background);
  border-radius: var(--radius-base);
  padding: var(--space-20);
  border: 1px solid var(--color-border);
  animation: slideIn 0.5s var(--ease-standard);
}

.photo-details h3 {
  font-size: var(--font-size-lg);
  margin-bottom: calc(var(--space-12) + var(--space-4));
  font-weight: var(--font-weight-semibold);
}

.photo-details dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-12) calc(var(--space-12) + var(--space-4));
  font-size: var(--font-size-sm);
}

.photo-details dt {
  font-weight: var(--font-weight-semibold);
  word-break: break-word;
}

.photo-details dd {
  color: var(--color-text-secondary);
  word-break: break-all;
  margin: 0;
}

.photo-details dd.gps {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

.photo-details dd code {
  background: var(--color-surface);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  padding: var(--space-20) var(--space-32);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer p {
  margin: var(--space-8) 0;
}

/* ==========================================================================
   Cards grid (connect/downloads)
   ========================================================================== */

.links-grid {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.link-card {
  flex: 1 1 260px;
  background: var(--color-surface);
  border-radius: var(--radius-base);
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.link-card h3 {
  margin: 0 0 var(--space-6);
  font-size: var(--font-size-base);
}

.link-card p {
  margin: 0 0 12px 0;
}

/* ==========================================================================
   Downloads page helpers
   ========================================================================== */

.platform-lead {
  margin: 0 0 10px;
}

.platform-note {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.btn-download {
  margin-top: auto;
  width: 100%;
  min-height: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: normal;
  line-height: 1.2;
}

.btn-download .btn-title {
  font-size: 15px;
  font-weight: 600;
}

.btn-download .btn-meta {
  font-size: 12px;
  opacity: 0.9;
}

/* ==========================================================================
   Connect page (form)
   ========================================================================== */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-textarea {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  padding: var(--space-10) var(--space-12);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
}

.form-textarea:focus {
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.form-file-input {
  padding: var(--space-8) 0;
}

.char-counter {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-align: right;
}

.char-counter.error {
  color: var(--color-error);
}

.contact-hint {
  margin-top: var(--space-12);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Force light UI on /connect and /downloads cards
   ========================================================================== */

.page-downloads .link-card,
.page-connect .link-card {
  background: #ffffff;
  color: #111827;
  border: 1px solid #e5e7eb;
}

.page-downloads .link-card p,
.page-connect .link-card p {
  color: #374151;
}

/* White textarea on connect even in dark theme */
.page-connect #contactMessage {
  background: #ffffff;
  color: #111827;
  border: 1px solid #d1d5db;
}

.page-connect #contactMessage::placeholder {
  color: #6b7280;
  opacity: 1;
}

/* readable links only (exclude buttons) */
.page-connect .link-card a:not(.btn),
.page-downloads .link-card a:not(.btn) {
  font-size: 15px;
  font-weight: 650;
  color: #0f766e;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-connect .link-card a:not(.btn):hover,
.page-downloads .link-card a:not(.btn):hover {
  text-decoration: underline;
}


/* ensure button text is readable inside cards */
.page-connect .link-card a.btn,
.page-downloads .link-card a.btn {
  color: var(--color-btn-primary-text);
  text-decoration: none;
}
.page-connect .link-card a.btn:visited,
.page-downloads .link-card a.btn:visited {
  color: var(--color-btn-primary-text);
}



/* ==========================================================================
   Connect page layout: top cards 2 columns
   ========================================================================== */

.page-connect section.links-section {
  /* keep padding/border from section.links-section; no extra layout changes */
}

.page-connect section.links-section .links-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

/* Bottom buttons row on /connect (the one after .contact-hint) */
.page-connect .upload-section > div.links-section {
  display: flex;
  gap: 12px;
  flex-wrap: nowrap;
  align-items: stretch;
  justify-content: center;
  padding: 0;
  background: transparent;
  border: 0;
}

/* Make both bottom buttons equal size */
.page-connect .upload-section > div.links-section > a.btn {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  white-space: nowrap;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 600px) {
  .page-connect section.links-section .links-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0;
  }

  .container {
    border-radius: 0;
    box-shadow: none;
  }

  .header {
    padding: var(--space-32) var(--space-20);
  }

  .header h1 {
    font-size: var(--font-size-3xl);
  }

  .header .subtitle {
    font-size: var(--font-size-base);
  }

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

  section.links-section {
    padding: calc(var(--space-12) + var(--space-4));
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    min-width: unset;
  }

  .upload-section,
  .results-section {
    padding: var(--space-20);
  }

  .upload-area {
    padding: calc(var(--space-32) + var(--space-8)) var(--space-20);
  }

  .upload-icon {
    font-size: calc(var(--space-32) + var(--space-8));
  }

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

  .photo-details dl {
    grid-template-columns: 120px 1fr;
    gap: var(--space-10) var(--space-12);
  }

  .selected-file-info {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-10);
  }

  .selected-file-info button {
    width: 100%;
  }

  .result-box {
    padding: var(--space-16);
  }

  .photo-details {
    padding: var(--space-16);
  }

  .footer {
    padding: var(--space-16) var(--space-20);
  }

  /* bottom connect buttons stack */
  .page-connect .upload-section > div.links-section {
    flex-direction: column;
  }

  .page-connect .upload-section > div.links-section > a.btn {
    width: 100%;
  }
}

@media (max-width: 600px) and (min-width: 481px) {
  .container {
    border-radius: var(--radius-base);
  }

  body {
    padding: var(--space-10);
  }

  section.links-section {
    flex-direction: column;
    padding: var(--space-20);
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    min-width: unset;
  }
}

/* Dark mode gradient polish */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(
      135deg,
      var(--color-teal-600) 0%,
      var(--color-teal-500) 100%
    );
  }

  .file-hash {
    background: rgba(245, 245, 245, 0.08);
  }
}

[data-color-scheme="dark"] body {
  background: linear-gradient(
    135deg,
    var(--color-teal-600) 0%,
    var(--color-teal-500) 100%
  );
}

[data-color-scheme="dark"] .file-hash {
  background: rgba(245, 245, 245, 0.08);
}

/* UNIFY ALL BUTTONS COLOR */
.btn-primary,
.btn-secondary,
.btn-verify,
.btn-outline {
  background: var(--color-primary) !important;
  color: var(--color-btn-primary-text) !important;
  border: none !important;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-verify:hover,
.btn-outline:hover {
  background: var(--color-primary-hover) !important;
}

.btn-primary:active,
.btn-secondary:active,
.btn-verify:active,
.btn-outline:active {
  background: var(--color-primary-active) !important;
}

.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}