/* ─────────────────────────────────────────────────────────────────
   KeyDrop — Premium Glassmorphism Design System
   ───────────────────────────────────────────────────────────────── */

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

/* ── CSS Variables ──────────────────────────────────────────────── */
:root {
  --bg-primary:    #0a0a0f;
  --bg-secondary:  #12121a;
  --bg-card:       rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border:        rgba(255, 255, 255, 0.08);
  --border-active: rgba(99, 102, 241, 0.6);

  --accent:        #6366f1;
  --accent-2:      #8b5cf6;
  --accent-3:      #06b6d4;
  --glow:          rgba(99, 102, 241, 0.35);
  --glow-cyan:     rgba(6, 182, 212, 0.3);

  --text-primary:  #f0f0ff;
  --text-secondary:#a0a0c0;
  --text-muted:    #5a5a7a;

  --success:       #10b981;
  --success-glow:  rgba(16, 185, 129, 0.3);
  --error:         #ef4444;
  --error-glow:    rgba(239, 68, 68, 0.3);
  --warning:       #f59e0b;

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

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-lg:  0 25px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--glow);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Animated Background ─────────────────────────────────────────── */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 12s ease-in-out infinite;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
  top: -200px; left: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  bottom: -150px; right: -100px;
  animation-delay: -4s;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  top: 40%; left: 45%;
  transform: translate(-50%, -50%);
  animation-delay: -8s;
  opacity: 0.15;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 30px) scale(0.95); }
}

/* ── Grid pattern overlay ────────────────────────────────────────── */
.bg-canvas::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── Layout ──────────────────────────────────────────────────────── */
.page-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header / Nav ─────────────────────────────────────────────────── */
.navbar {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  background: rgba(10, 10, 15, 0.6);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 0 20px var(--glow);
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 50px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  background: var(--bg-card);
}
.nav-link:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
  background: var(--bg-card-hover);
  box-shadow: 0 0 15px var(--glow);
}

/* ── Hero ──────────────────────────────────────────────────────────── */
.hero {
  padding: 70px 0 40px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid rgba(99,102,241,0.4);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(99,102,241,0.1);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 50%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
  max-width: 520px;
  margin: 0 auto 36px;
}

/* ── Stats row ───────────────────────────────────────────────────── */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

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

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Card ─────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(24px);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(99,102,241,0.07);
}

/* ── Tab Switcher ─────────────────────────────────────────────────── */
.tab-switcher {
  display: flex;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 5px;
  gap: 4px;
  margin-bottom: 32px;
}

.tab-btn {
  flex: 1;
  padding: 11px 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 20px var(--glow);
}

.tab-btn:not(.active):hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* ── Form Elements ────────────────────────────────────────────────── */
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.textarea {
  width: 100%;
  min-height: 180px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 16px;
  resize: vertical;
  outline: none;
  transition: var(--transition);
}

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

.textarea:focus {
  border-color: var(--border-active);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15), 0 0 30px var(--glow);
}

/* ── Drop Zone ────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 50px 30px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  background: rgba(0,0,0,0.2);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(99,102,241,0.05);
  box-shadow: 0 0 30px rgba(99,102,241,0.15);
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.drop-icon {
  font-size: 3rem;
  margin-bottom: 14px;
  display: block;
  filter: grayscale(0.3);
}

.drop-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.drop-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.file-selected {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  margin-top: 14px;
}

.file-selected-icon { font-size: 1.8rem; }
.file-selected-info { flex: 1; text-align: left; }
.file-selected-name { font-size: 0.9rem; font-weight: 600; color: var(--success); }
.file-selected-size { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-md);
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 20px var(--glow);
  width: 100%;
  margin-top: 24px;
  padding: 16px;
  font-size: 1rem;
  letter-spacing: 0.3px;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px var(--glow);
}

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

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--border-active);
  background: var(--bg-card-hover);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: #fff;
  box-shadow: 0 4px 20px var(--success-glow);
}
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 8px 35px var(--success-glow); }

/* ── Code Display ────────────────────────────────────────────────── */
.code-result {
  display: none;
  margin-top: 28px;
  animation: slideUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.code-result.show { display: block; }

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

.code-card {
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.08));
  border: 1px solid rgba(99,102,241,0.35);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.code-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.05), transparent);
  pointer-events: none;
}

.code-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.code-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 8px;
  color: #fff;
  text-shadow: 0 0 30px var(--glow);
  margin-bottom: 20px;
  display: block;
  word-break: break-all;
}

.code-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.code-expiry {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

/* ── OTP Input ────────────────────────────────────────────────────── */
.otp-container {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 28px;
}

.otp-box {
  width: 58px;
  height: 66px;
  background: rgba(0,0,0,0.35);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
  text-transform: uppercase;
  caret-color: var(--accent);
}

.otp-box:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.2), 0 0 20px var(--glow);
  background: rgba(99,102,241,0.05);
}

.otp-box.filled {
  border-color: rgba(99,102,241,0.5);
  color: var(--accent);
}

/* ── Result Panel ─────────────────────────────────────────────────── */
.result-panel {
  display: none;
  margin-top: 24px;
  animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.result-panel.show { display: block; }

.result-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.badge-text {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: var(--accent);
}

.badge-file {
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: var(--accent-3);
}

.text-preview {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 300px;
  overflow-y: auto;
  line-height: 1.7;
}

.text-preview::-webkit-scrollbar { width: 4px; }
.text-preview::-webkit-scrollbar-track { background: transparent; }
.text-preview::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.file-info-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: rgba(6, 182, 212, 0.06);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-md);
}

.file-icon-big { font-size: 3rem; }
.file-meta { flex: 1; }
.file-name { font-size: 1rem; font-weight: 700; color: var(--text-primary); word-break: break-all; }
.file-size-text { font-size: 0.82rem; color: var(--text-muted); margin-top: 3px; }
.file-mime { font-size: 0.78rem; color: var(--accent-3); margin-top: 2px; }

/* ── Alert / Toast ────────────────────────────────────────────────── */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideUp 0.3s ease;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

/* ── Loader ───────────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

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

/* ── Copy Toast ───────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(10, 10, 15, 0.95);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.3);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(20px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Progress bar ─────────────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,0.07);
  border-radius: 2px;
  margin-top: 16px;
  overflow: hidden;
  display: none;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  border-radius: 2px;
  width: 0;
  transition: width 0.3s ease;
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Section: How it works ────────────────────────────────────────── */
.how-it-works {
  padding: 60px 0;
}

.section-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.step-card:hover {
  border-color: rgba(99,102,241,0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 30px rgba(99,102,241,0.1);
}

.step-num {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0 auto 14px;
  box-shadow: 0 0 20px var(--glow);
}

.step-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Footer ───────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}
footer a:hover { text-decoration: underline; }

/* ── Retrieve Page specific ────────────────────────────────────────── */
.retrieve-hero {
  padding: 60px 0 40px;
  text-align: center;
}

.retrieve-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.retrieve-hero p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 440px;
  margin: 0 auto 40px;
}

/* ── Utilities ────────────────────────────────────────────────────── */
.mt-4  { margin-top: 16px; }
.mt-6  { margin-top: 24px; }
.mb-0  { margin-bottom: 0 !important; }
.text-center { text-align: center; }
.hidden { display: none !important; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 8px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .card { padding: 24px 20px; }
  .otp-box { width: 46px; height: 56px; font-size: 1.4rem; }
  .code-display { letter-spacing: 4px; }
  .stats-row { gap: 24px; }
  .file-info-card { flex-direction: column; text-align: center; }
  .code-actions { flex-direction: column; }
  .code-actions .btn { width: 100%; }
}