/* ─────────────────────────────────────────────────────────────────────────────
   Goblet v1 — Stylesheet
   Dark glassmorphism design with vibrant emerald/teal accent.
   Google Fonts: Inter
───────────────────────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Design tokens ──────────────────────────────────────────────────────────── */
:root {
  --bg-base:        #0b0f1a;
  --bg-surface:     #111827;
  --bg-card:        rgba(17, 24, 39, 0.85);
  --bg-glass:       rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.07);

  --accent:         #10b981;   /* emerald-500 */
  --accent-light:   #34d399;   /* emerald-400 */
  --accent-dark:    #059669;   /* emerald-600 */
  --accent-glow:    rgba(16, 185, 129, 0.25);
  --accent-glow-lg: rgba(16, 185, 129, 0.12);

  --decrypt-color:  #818cf8;   /* indigo-400 */
  --decrypt-glow:   rgba(129, 140, 248, 0.25);

  --red:            #f87171;
  --red-bg:         rgba(248, 113, 113, 0.1);
  --yellow:         #fbbf24;
  --yellow-bg:      rgba(251, 191, 36, 0.1);
  --green:          #34d399;
  --green-bg:       rgba(52, 211, 153, 0.1);

  --text-primary:   #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted:     #6b7280;

  --border:         rgba(255, 255, 255, 0.08);
  --border-accent:  rgba(16, 185, 129, 0.35);
  --border-decrypt: rgba(129, 140, 248, 0.35);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 24px 64px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255,255,255,0.05) inset;
  --shadow-btn:  0 4px 20px rgba(16, 185, 129, 0.35);

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ── Base ────────────────────────────────────────────────────────────────────── */
html {
  height: 100%;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100%;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  overflow-x: hidden;
}

/* ── Animated background mesh ────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 15% 20%, rgba(16, 185, 129, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 75%, rgba(129, 140, 248, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse 50% 60% at 50% 50%, rgba(6, 78, 59, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ──────────────────────────────────────────────────────────────────── */
.site-header {
  width: 100%;
  text-align: center;
  padding: 48px 24px 24px;
  position: relative;
  z-index: 1;
}

.logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 10px;
}

.logo-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 24px var(--accent-glow), 0 0 0 1px rgba(16,185,129,0.3);
  animation: float 4s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-5px); }
}

.logo-text {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent-light) 0%, #6ee7b7 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}

.tagline em {
  color: var(--accent-light);
  font-style: normal;
  font-weight: 500;
}

/* ── Main content ─────────────────────────────────────────────────────────────── */
.main-content {
  width: 100%;
  max-width: 580px;
  padding: 0 20px 60px;
  position: relative;
  z-index: 1;
}

/* ── Card ─────────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16,185,129,0.4), transparent);
}

/* ── Drop Zone ────────────────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  background: var(--bg-glass);
  position: relative;
  overflow: hidden;
}

.drop-zone::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-glow-lg) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--bg-glass-hover);
  box-shadow: 0 0 0 4px var(--accent-glow), inset 0 0 32px var(--accent-glow-lg);
}

.drop-zone:hover::after,
.drop-zone.drag-over::after {
  opacity: 1;
}

.drop-zone.drag-over {
  border-style: solid;
  transform: scale(1.01);
}

.drop-zone.has-file {
  border-color: var(--accent);
  border-style: solid;
  background: rgba(16, 185, 129, 0.04);
}

.drop-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  transition: transform var(--transition);
  filter: drop-shadow(0 0 16px var(--accent-glow));
}

.drop-zone:hover .drop-icon,
.drop-zone.drag-over .drop-icon {
  transform: translateY(-4px) scale(1.1);
}

.drop-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.drop-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.drop-sub strong {
  color: var(--accent-light);
  font-weight: 600;
}

.file-select-btn {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--bg-glass);
  border: 1px solid var(--border-accent);
  color: var(--accent-light);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  font-family: inherit;
}

.file-select-btn:hover {
  background: rgba(16, 185, 129, 0.1);
  box-shadow: 0 0 0 3px var(--accent-glow);
  transform: translateY(-1px);
}

.file-select-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ── File meta (shown after file selected) ────────────────────────────────────── */
.file-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  margin-top: 16px;
  animation: slide-in 0.3s ease;
}

.file-meta-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.file-meta-info {
  flex: 1;
  min-width: 0;
}

.file-meta-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta-size {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 1px;
}

/* ── Mode section ─────────────────────────────────────────────────────────────── */
.mode-section {
  margin-top: 20px;
  animation: slide-in 0.3s ease;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.mode-badge.encrypt {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-light);
  border: 1px solid var(--border-accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.mode-badge.decrypt {
  background: rgba(129, 140, 248, 0.12);
  color: var(--decrypt-color);
  border: 1px solid var(--border-decrypt);
  box-shadow: 0 0 12px var(--decrypt-glow);
}

/* ── .gob metadata card ───────────────────────────────────────────────────────── */
.gob-meta-card {
  margin-top: 16px;
  padding: 16px;
  background: rgba(129, 140, 248, 0.06);
  border: 1px solid var(--border-decrypt);
  border-radius: var(--radius-md);
  animation: slide-in 0.3s ease;
}

.gob-meta-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--decrypt-color);
  margin-bottom: 10px;
}

.gob-meta-row {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  align-items: flex-start;
}

.gob-meta-row + .gob-meta-row {
  margin-top: 6px;
}

.gob-meta-label {
  color: var(--text-muted);
  flex-shrink: 0;
  width: 80px;
}

.gob-meta-value {
  color: var(--text-primary);
  font-weight: 500;
  word-break: break-all;
}

/* ── Password section ─────────────────────────────────────────────────────────── */
.password-section {
  margin-top: 24px;
  animation: slide-in 0.3s ease;
}

.password-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.password-field {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input {
  width: 100%;
  padding: 13px 48px 13px 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: 'Inter', monospace;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.password-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.password-input::placeholder {
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
}

.password-toggle {
  position: absolute;
  right: 14px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0.6;
  transition: opacity var(--transition);
  padding: 4px;
  line-height: 1;
}

.password-toggle:hover {
  opacity: 1;
}

.password-warn {
  margin-top: 7px;
  font-size: 0.8rem;
  color: var(--yellow);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}

.password-warn.visible {
  opacity: 1;
}

/* ── Action button ────────────────────────────────────────────────────────────── */
.action-btn {
  width: 100%;
  margin-top: 20px;
  padding: 15px 24px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition), background var(--transition);
  box-shadow: var(--shadow-btn);
  position: relative;
  overflow: hidden;
  animation: slide-in 0.3s ease;
}

.action-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.action-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(16, 185, 129, 0.5);
}

.action-btn:hover:not(:disabled)::before {
  opacity: 1;
}

.action-btn:active:not(:disabled) {
  transform: translateY(0);
}

.action-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ── Reset button ────────────────────────────────────────────────────────────── */
.reset-btn {
  width: 100%;
  margin-top: 10px;
  padding: 11px 24px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  animation: slide-in 0.3s ease;
}

.reset-btn:hover:not(:disabled) {
  border-color: var(--border-accent);
  color: var(--text-secondary);
  background: var(--bg-glass);
}

.reset-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Status bar ──────────────────────────────────────────────────────────────── */
.status-bar {
  margin-top: 20px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  border: 1px solid transparent;
  min-height: 46px;
}

.status-bar.status-idle {
  background: var(--bg-glass);
  border-color: var(--border);
  color: var(--text-muted);
}

.status-bar.status-processing {
  background: rgba(16, 185, 129, 0.07);
  border-color: var(--border-accent);
  color: var(--accent-light);
  animation: pulse-border 1.5s ease-in-out infinite;
}

.status-bar.status-done {
  background: var(--green-bg);
  border-color: rgba(52, 211, 153, 0.3);
  color: var(--green);
}

.status-bar.status-error {
  background: var(--red-bg);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--red);
}

@keyframes pulse-border {
  0%, 100% { border-color: var(--border-accent); }
  50%       { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
}

/* ── Spinner ──────────────────────────────────────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(16, 185, 129, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  flex-shrink: 0;
}

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

/* ── Crypto warning (unsupported browser) ────────────────────────────────────── */
.crypto-warning {
  margin-top: 32px;
  padding: 28px;
  background: var(--red-bg);
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
}

.crypto-warning h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 8px;
}

.crypto-warning p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Info strip below card ─────────────────────────────────────────────────────── */
.info-strip {
  margin-top: 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.info-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.info-pill span {
  font-size: 0.9rem;
}

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.site-footer {
  width: 100%;
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.78rem;
  position: relative;
  z-index: 1;
  margin-top: auto;
  border-top: 1px solid var(--border);
}

.site-footer a {
  color: var(--accent-light);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

/* ── Divider ──────────────────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

/* ── Utility classes ─────────────────────────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ── Animations ──────────────────────────────────────────────────────────────── */
@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Scrollbar ───────────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .site-header {
    padding: 32px 16px 16px;
  }

  .logo-text {
    font-size: 1.9rem;
  }

  .main-content {
    padding: 0 12px 48px;
  }

  .card {
    padding: 22px 18px;
    border-radius: var(--radius-lg);
  }

  .drop-zone {
    padding: 28px 16px;
  }

  .info-strip {
    justify-content: center;
  }
}

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