/* ==========================================
   2FA CUY — Premium Design System
   Dual Mode: Cream (default) + Dark Green
   ========================================== */

:root {
  /* ── Core Palette (shared) ── */
  --cream-50:  #fdfcfa;
  --cream-100: #f9f6f0;
  --cream-200: #f3ede2;
  --cream-300: #e8dfd0;
  --cream-400: #d9ccb8;

  --green-900: #0f2a14;
  --green-800: #163b1e;
  --green-700: #1e5128;
  --green-600: #276d35;
  --green-500: #2d8a42;
  --green-400: #4caf50;
  --green-300: #81c784;

  /* ── Mode: Cream (default) ── */
  --bg-primary:      #f5f0e6;
  --bg-card:         rgba(15, 42, 20, 0.93);
  --bg-input:        rgba(10, 30, 14, 0.85);

  --border-subtle:   rgba(30, 81, 40, 0.1);
  --border-medium:   rgba(30, 81, 40, 0.15);

  --text-page:       var(--green-900);
  --text-page-muted: rgba(15, 42, 20, 0.4);
  --card-text:       var(--cream-100);
  --card-text-muted: rgba(232, 223, 208, 0.45);

  --brand-accent:    var(--green-600);

  --color-valid:     var(--green-300);
  --color-invalid:   #e57373;

  --ring-track-color: rgba(232, 223, 208, 0.08);
  --ring-fill-color: var(--green-400);
  --timer-digits-color: var(--green-300);

  --code-shadow:     0 0 40px rgba(129, 199, 132, 0.1);
  --code-glow:       rgba(45, 138, 66, 0.06);

  --corner-accent-color: rgba(232, 223, 208, 0.1);
  --corner-accent-active: rgba(232, 223, 208, 0.2);

  --timeline-bg:     rgba(232, 223, 208, 0.06);
  --card-icon-color: var(--cream-300);

  --orb-1:           rgba(45, 138, 66, 0.07);
  --orb-2:           rgba(180, 160, 100, 0.05);
  --streak-color:    rgba(30, 81, 40, 0.04);
  --grain-opacity:   0.04;

  --shadow-card: 0 8px 32px rgba(15, 42, 20, 0.15), 0 2px 8px rgba(15, 42, 20, 0.08);
  --shadow-glow: 0 0 40px rgba(45, 138, 66, 0.05);

  --toast-bg:        rgba(15, 42, 20, 0.95);
  --toast-border:    rgba(30, 81, 40, 0.2);
  --toast-text:      var(--cream-100);

  /* ── Typography ── */
  --font-display: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body:    'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Mode: Dark Green ── */
[data-theme="green"] {
  --bg-primary:      #0b1a0e;
  --bg-card:         rgba(249, 246, 240, 0.95);
  --bg-input:        rgba(15, 42, 20, 0.06);

  --border-subtle:   rgba(15, 42, 20, 0.08);
  --border-medium:   rgba(15, 42, 20, 0.12);

  --text-page:       var(--cream-100);
  --text-page-muted: rgba(232, 223, 208, 0.45);
  --card-text:       var(--green-900);
  --card-text-muted: rgba(15, 42, 20, 0.45);

  --brand-accent:    var(--green-300);

  --color-valid:     var(--green-700);
  --color-invalid:   #c62828;

  --ring-track-color: rgba(15, 42, 20, 0.08);
  --ring-fill-color: var(--green-600);
  --timer-digits-color: var(--green-600);

  --code-shadow:     none;
  --code-glow:       transparent;

  --corner-accent-color: rgba(15, 42, 20, 0.1);
  --corner-accent-active: rgba(15, 42, 20, 0.2);

  --timeline-bg:     rgba(15, 42, 20, 0.06);
  --card-icon-color: var(--green-600);

  --orb-1:           rgba(45, 138, 66, 0.12);
  --orb-2:           rgba(129, 199, 132, 0.05);
  --streak-color:    rgba(129, 199, 132, 0.03);
  --grain-opacity:   0.025;

  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.2), 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(45, 138, 66, 0.04);

  --toast-bg:        rgba(249, 246, 240, 0.98);
  --toast-border:    rgba(15, 42, 20, 0.15);
  --toast-text:      var(--green-900);
}

/* ==========================================
   Reset & Base
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html { height: -webkit-fill-available; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-page);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.3s ease;
}

/* ==========================================
   Ambient Background
   ========================================== */
.ambient-bg {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none; overflow: hidden;
}

.grain-overlay {
  position: absolute; inset: 0;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

.orb { position: absolute; border-radius: 50%; filter: blur(100px); }

.orb-1 {
  top: -15%; right: -10%; width: 500px; height: 500px;
  background: radial-gradient(circle, var(--orb-1) 0%, transparent 70%);
  animation: drift-1 18s ease-in-out infinite alternate;
}
.orb-2 {
  bottom: -20%; left: -15%; width: 600px; height: 600px;
  background: radial-gradient(circle, var(--orb-2) 0%, transparent 70%);
  animation: drift-2 22s ease-in-out infinite alternate;
}
.orb-3 {
  top: 50%; left: 50%; width: 300px; height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--orb-1) 0%, transparent 70%);
}

.light-streak {
  position: absolute; width: 1px;
  background: linear-gradient(to bottom, transparent, var(--streak-color), transparent);
  opacity: 0.5;
}
.streak-1 { left: 20%; top: 0; height: 100%; animation: shimmer 8s infinite; }
.streak-2 { right: 25%; top: 0; height: 100%; animation: shimmer 10s 3s infinite; }

@keyframes drift-1 { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(-40px,50px) scale(1.1); } }
@keyframes drift-2 { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(50px,-30px) scale(1.15); } }
@keyframes shimmer { 0%,100% { opacity: 0; } 50% { opacity: 0.3; } }

/* ==========================================
   App Shell
   ========================================== */
.app-shell {
  position: relative; z-index: 1;
  max-width: 520px; margin: 0 auto;
  padding: 1.25rem 1.25rem 1.5rem;
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center;
}

/* ==========================================
   Navbar
   ========================================== */
.navbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem 0; margin-bottom: 1.25rem;
}

.brand { display: flex; align-items: center; gap: 0.65rem; }

.brand-emblem {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--green-700), var(--green-600));
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: center; align-items: center;
  color: var(--cream-200);
  box-shadow: 0 4px 16px rgba(45,138,66,0.15), inset 0 1px 0 rgba(255,255,255,0.05);
}

.brand-text { display: flex; align-items: baseline; gap: 0.35rem; }

.brand-name {
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.2rem; color: var(--text-page); letter-spacing: -0.3px;
  transition: color 0.3s;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.docs-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  color: var(--card-text);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-card);
}

.docs-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.docs-link i {
  font-size: 0.85rem;
  color: var(--brand-accent);
}

@media (max-width: 480px) {
  .docs-link span {
    display: none;
  }
  .docs-link {
    padding: 0.6rem;
    width: 40px;
    height: 40px;
    justify-content: center;
  }
}

/* Theme Toggle Button */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  color: var(--card-text);
  display: flex; justify-content: center; align-items: center;
  cursor: pointer; font-size: 1rem;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-card);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.theme-toggle:active { transform: translateY(0); }

/* ==========================================
   Generator Widget
   ========================================== */
.generator-widget { display: flex; flex-direction: column; gap: 1rem; }

/* ── Input Card ── */
.input-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-medium);
  border-radius: 16px; padding: 1.25rem;
  box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
  transition: background-color 0.4s, border-color 0.3s;
}

.input-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,223,208,0.1), transparent);
}

.input-card-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 1.5px;
  color: var(--card-text-muted); margin-bottom: 0.75rem;
}

.input-card-label i { color: var(--card-icon-color); font-size: 0.8rem; }

.input-row { display: flex; align-items: center; gap: 0.5rem; }

.input-row input {
  flex: 1; background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--card-text);
  padding: 0.85rem 1rem; border-radius: 10px;
  font-family: var(--font-mono); font-size: 0.9rem; font-weight: 500;
  outline: none; transition: all 0.25s ease;
  letter-spacing: 0.5px; text-transform: uppercase;
}

.input-row input::placeholder {
  text-transform: none; color: var(--card-text-muted);
  font-family: var(--font-body); font-weight: 400; font-size: 0.85rem; letter-spacing: 0;
}

.input-row input:focus {
  border-color: var(--green-400);
  box-shadow: 0 0 0 3px rgba(45,138,66,0.12), 0 0 20px rgba(45,138,66,0.06);
}

.paste-action {
  background: linear-gradient(135deg, var(--green-600), var(--green-500));
  border: 1px solid rgba(255,255,255,0.06);
  color: var(--cream-200);
  padding: 0.85rem 1.15rem; border-radius: 10px;
  font-family: var(--font-body); font-weight: 600; font-size: 0.8rem;
  cursor: pointer; display: flex; align-items: center; gap: 0.4rem;
  transition: all 0.25s ease; white-space: nowrap;
  box-shadow: 0 4px 12px rgba(30,81,40,0.25), inset 0 1px 0 rgba(255,255,255,0.05);
}

.paste-action:hover {
  background: linear-gradient(135deg, var(--green-500), var(--green-400));
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(30,81,40,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
}

.paste-action:active { transform: translateY(0); }

.validation-row {
  display: flex; align-items: center; gap: 0.4rem;
  margin-top: 0.6rem; font-size: 0.75rem; min-height: 1.2rem;
}

.val-icon { font-size: 0.7rem; }
.val-text { color: var(--card-text-muted); transition: color 0.3s; }
.val-text.valid { color: var(--color-valid); }
.val-text.invalid { color: var(--color-invalid); }

/* ── Output Card ── */
.output-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-medium);
  border-radius: 20px; padding: 1.5rem;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  position: relative; overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
}

.output-card.dormant {
  opacity: 0.25; pointer-events: none;
  filter: grayscale(0.4); transform: scale(0.98);
}

/* Corner accents */
.corner-accent {
  position: absolute; width: 14px; height: 14px;
  border-color: var(--corner-accent-color);
  border-style: solid; border-width: 0;
  transition: border-color 0.4s;
}
.output-card:not(.dormant) .corner-accent { border-color: var(--corner-accent-active); }

.top-left     { top: 10px; left: 10px; border-top-width: 1px; border-left-width: 1px; border-top-left-radius: 4px; }
.top-right    { top: 10px; right: 10px; border-top-width: 1px; border-right-width: 1px; border-top-right-radius: 4px; }
.bottom-left  { bottom: 10px; left: 10px; border-bottom-width: 1px; border-left-width: 1px; border-bottom-left-radius: 4px; }
.bottom-right { bottom: 10px; right: 10px; border-bottom-width: 1px; border-right-width: 1px; border-bottom-right-radius: 4px; }

/* Output header */
.output-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.5rem;
}

.output-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.65rem; font-weight: 700; letter-spacing: 1.5px;
  color: var(--card-text-muted);
}

.active-indicator {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--green-400);
  box-shadow: 0 0 8px rgba(76,175,80,0.6);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { opacity: 0.4; transform: scale(0.8); }
  50%     { opacity: 1; transform: scale(1.2); }
}

/* Timer Ring */
.timer-cluster { display: flex; align-items: center; gap: 0.5rem; }

.timer-ring { width: 32px; height: 32px; transform: rotate(-90deg); }

.ring-track { fill: none; stroke: var(--ring-track-color); stroke-width: 2; }
.ring-fill {
  fill: none; stroke: var(--ring-fill-color); stroke-width: 2.5; stroke-linecap: round;
  transition: stroke-dashoffset 1s linear, stroke 0.4s ease;
}
.ring-fill.warning { stroke: var(--color-invalid); }

.timer-digits {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700;
  color: var(--timer-digits-color); min-width: 20px; text-align: right;
  transition: color 0.4s;
}
.timer-digits.warning { color: var(--color-invalid); }

/* Code Showcase */
.code-showcase { text-align: center; padding: 1.75rem 0; position: relative; }

.code-showcase::before {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%); width: 200px; height: 200px;
  background: radial-gradient(circle, var(--code-glow) 0%, transparent 70%);
  pointer-events: none;
}

.code-value {
  font-family: var(--font-mono); font-weight: 800; font-size: 3rem;
  color: var(--card-text); letter-spacing: 6px; user-select: all;
  position: relative; z-index: 1; display: inline-block;
  text-shadow: var(--code-shadow);
}

.code-value .sep { display: inline-block; width: 18px; opacity: 0.2; letter-spacing: 0; }

/* Copy Button */
.copy-action {
  width: 100%;
  background: linear-gradient(135deg, var(--green-600), var(--green-500));
  border: 1px solid rgba(255,255,255,0.06);
  color: var(--cream-50);
  padding: 0.9rem 1.5rem; border-radius: 12px;
  font-family: var(--font-body); font-weight: 700; font-size: 0.9rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  position: relative; overflow: hidden;
  box-shadow: 0 4px 16px rgba(30,81,40,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}

.copy-action::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.04) 100%);
  pointer-events: none;
}

.copy-action:hover {
  background: linear-gradient(135deg, var(--green-500), var(--green-400));
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30,81,40,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
}

.copy-action:active { transform: translateY(0) scale(0.98); }

.copy-icon-wrap {
  width: 24px; height: 24px; background: rgba(255,255,255,0.08);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
}

.copy-shortcut { margin-left: auto; font-size: 0.7rem; font-weight: 400; color: rgba(255,255,255,0.35); }

/* Timeline bar */
.timeline-bar {
  position: absolute; bottom: 0; left: 0; width: 100%; height: 3px;
  background: var(--timeline-bg);
}

.timeline-fill {
  height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--green-600), var(--ring-fill-color));
  transition: width 1s linear; border-radius: 0 2px 2px 0;
}

.timeline-fill.warning { background: linear-gradient(90deg, #e57373, #ef5350); }

/* ==========================================
   Trust Strip
   ========================================== */
.trust-strip {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; margin-top: 1.5rem; padding: 0.75rem 0; flex-wrap: wrap;
}

.trust-item {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.7rem; font-weight: 700; color: var(--text-page-muted);
  transition: color 0.3s;
}

.trust-item i { color: var(--green-600); font-size: 0.65rem; }

[data-theme="green"] .trust-item i { color: var(--green-400); }

.trust-divider {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--text-page-muted); opacity: 0.4;
}

/* ==========================================
   Footer
   ========================================== */
.app-footer { text-align: center; padding: 0.75rem 0 0.25rem; }

.app-footer p {
  font-size: 0.7rem; font-weight: 600;
  color: var(--text-page-muted); letter-spacing: 0.2px;
  transition: color 0.3s;
}

/* ==========================================
   Toast System
   ========================================== */
.toast-container {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 0.5rem; z-index: 200;
  width: calc(100% - 2rem); max-width: 380px; pointer-events: none;
}

.toast {
  background: var(--toast-bg);
  border: 1px solid var(--toast-border);
  color: var(--toast-text);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  padding: 0.85rem 1.25rem; border-radius: 12px;
  font-size: 0.85rem; font-weight: 600;
  display: flex; align-items: center; gap: 0.75rem;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  animation: toastIn 0.35s cubic-bezier(0.175,0.885,0.32,1.275) forwards,
             toastOut 0.3s cubic-bezier(0.6,-0.28,0.735,0.045) 3.5s forwards;
  pointer-events: auto;
}

.toast.toast-success { border-left: 3px solid var(--color-valid); }
.toast.toast-success i { color: var(--color-valid); }
.toast.toast-danger { border-left: 3px solid var(--color-invalid); }
.toast.toast-danger i { color: var(--color-invalid); }

/* ==========================================
   Animations
   ========================================== */
@keyframes toastIn { from { opacity: 0; transform: translate3d(0,24px,0); } to { opacity: 1; transform: translate3d(0,0,0); } }
@keyframes toastOut { from { opacity: 1; transform: translate3d(0,0,0); } to { opacity: 0; transform: translate3d(0,-16px,0); } }

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 480px) {
  .app-shell { padding: 1rem 0.85rem 1.5rem; }
  .code-value { font-size: 2.25rem; letter-spacing: 3px; }
  .code-value .sep { width: 10px; }
  .code-showcase { padding: 1.25rem 0; }
  .trust-strip { gap: 0.6rem; }
  .input-row { flex-direction: column; }
  .paste-action { width: 100%; justify-content: center; padding: 0.75rem; }
}