/* ===================================================
   SleepAI - style.css
   Dark navy/purple glassmorphism design
=================================================== */

/* ---- Google Fonts sudah di-import via HTML ---- */

/* ============ CSS VARIABLES ============ */
:root {
  /* Warna utama */
  --bg-deep: #070b19;
  --bg-mid: #111936;
  --bg-card: rgba(15, 22, 55, 0.72);
  --accent-blue: #4f8ef7;
  --accent-purple: #8b5cf6;
  --accent-teal: #22d3ee;
  --accent-pink: #ec4899;

  /* Teks */
  --text-primary: #f0f4ff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Status */
  --error-color: #f87171;
  --success-glow: rgba(79, 142, 247, 0.35);

  /* Spacing */
  --radius-card: 24px;
  --radius-input: 14px;
  --radius-btn: 14px;

  /* Transition */
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  position: relative;
}

/* ============ BACKGROUND GRADIENT ============ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(79, 70, 229, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 60%),
    linear-gradient(160deg, #070b19 0%, #111936 50%, #0d1630 100%);
  z-index: -2;
  pointer-events: none;
}

/* ============ STARS ============ */
.stars-container {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
  animation: twinkle var(--dur, 3s) ease-in-out infinite var(--delay, 0s) alternate;
  opacity: 0;
}

@keyframes twinkle {
  0% {
    opacity: 0;
    transform: scale(0.6);
  }

  50% {
    opacity: 0.8;
    transform: scale(1);
  }

  100% {
    opacity: 0.2;
    transform: scale(0.8);
  }
}

/* ============ ORB DECORATIONS ============ */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  animation: orbFloat 8s ease-in-out infinite alternate;
}

.orb-1 {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(79, 142, 247, 0.22), transparent 70%);
  top: -80px;
  left: -100px;
  animation-duration: 10s;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
  bottom: 0;
  right: -80px;
  animation-duration: 12s;
  animation-delay: -4s;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 9s;
  animation-delay: -2s;
}

@keyframes orbFloat {
  0% {
    transform: translateY(0px) scale(1);
  }

  100% {
    transform: translateY(40px) scale(1.08);
  }
}

/* ============ MAIN WRAPPER ============ */
.main-wrapper {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  padding: 40px 16px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeInUp 0.7s ease both;
}

/* ============ CARD ============ */
.card {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  box-shadow:
    0 0 0 1px rgba(79, 142, 247, 0.08),
    0 8px 32px rgba(0, 0, 0, 0.5),
    0 2px 8px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  position: relative;
}

/* Glow strip di atas card */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.6), rgba(79, 142, 247, 0.6), transparent);
}

/* ============ CARD HEADER ============ */
.card-header {
  text-align: center;
  padding: 40px 32px 28px;
  position: relative;
}

.moon-badge {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 16px rgba(139, 92, 246, 0.6));
  animation: moonPulse 3s ease-in-out infinite alternate;
}

@keyframes moonPulse {
  0% {
    filter: drop-shadow(0 0 12px rgba(139, 92, 246, 0.4));
    transform: scale(1);
  }

  100% {
    filter: drop-shadow(0 0 24px rgba(79, 142, 247, 0.7));
    transform: scale(1.06);
  }
}

.brand-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #a78bfa 0%, #60a5fa 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 6px;
}

.brand-subtitle {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-purple);
  margin-bottom: 12px;
}

.brand-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 320px;
  margin: 0 auto;
}

/* ============ FORM SECTION ============ */
.form-section {
  padding: 0 32px 32px;
}

/* ============ INPUT GROUP ============ */
.input-group {
  margin-bottom: 20px;
  position: relative;
}

.input-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.label-icon {
  font-size: 1rem;
}

.label-unit {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.input-field {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-input);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.input-field::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.input-field:focus {
  border-color: var(--accent-blue);
  background: rgba(79, 142, 247, 0.06);
  box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.18), 0 0 16px rgba(79, 142, 247, 0.1);
}

.input-field:hover:not(:focus) {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

/* Input waktu – menyesuaikan tampilan browser */
.input-time {
  cursor: pointer;
}

.input-time::-webkit-calendar-picker-indicator {
  filter: invert(1) opacity(0.5);
  cursor: pointer;
}

/* State error input */
.input-group.has-error .input-field {
  border-color: var(--error-color);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.error-msg {
  display: block;
  font-size: 0.78rem;
  color: var(--error-color);
  margin-top: 5px;
  min-height: 1rem;
  font-weight: 500;
  padding-left: 4px;
}

/* ============ BUTTON PRIMARY ============ */
.btn-primary {
  width: 100%;
  padding: 16px 24px;
  margin-top: 8px;
  border: none;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, #6d28d9 0%, #4f8ef7 100%);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  box-shadow: 0 4px 24px rgba(109, 40, 217, 0.4), 0 2px 8px rgba(79, 142, 247, 0.25);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 8px 32px rgba(109, 40, 217, 0.55), 0 4px 16px rgba(79, 142, 247, 0.35);
  filter: brightness(1.08);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 2px 12px rgba(109, 40, 217, 0.4);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
}

.btn-icon {
  font-size: 1.1rem;
}

/* ============ RESULT DIVIDER ============ */
.result-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.4), rgba(79, 142, 247, 0.4), transparent);
  margin: 0 32px;
}

/* ============ RESULT SECTION ============ */
.result-section {
  padding: 28px 32px 36px;
  animation: slideUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.result-section[hidden] {
  display: none;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-title {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

/* ============ TIME CARDS GRID ============ */
.result-times-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.time-card {
  border-radius: 18px;
  padding: 22px 16px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.time-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.sleep-card {
  background: linear-gradient(145deg, rgba(109, 40, 217, 0.25), rgba(79, 52, 180, 0.15));
  border-color: rgba(139, 92, 246, 0.25);
  box-shadow: 0 4px 16px rgba(109, 40, 217, 0.15);
}

.wake-card {
  background: linear-gradient(145deg, rgba(34, 211, 238, 0.15), rgba(79, 142, 247, 0.12));
  border-color: rgba(34, 211, 238, 0.2);
  box-shadow: 0 4px 16px rgba(34, 211, 238, 0.1);
}

.time-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
  display: block;
}

.time-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.time-value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
  line-height: 1;
}

/* ============ INFO GRID ============ */
.result-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.info-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 16px;
  padding: 18px 14px;
  text-align: center;
  transition: transform var(--transition);
}

.info-card:hover {
  transform: translateY(-2px);
}

.info-icon {
  font-size: 1.4rem;
  margin-bottom: 6px;
  display: block;
}

.info-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.info-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-blue);
}

/* ============ RECOMMENDATION ============ */
.recommendation-box {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(79, 142, 247, 0.1));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 14px;
  padding: 16px 20px;
  margin-bottom: 24px;
}

.recommendation-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  text-align: center;
}

/* ============ SLEEP TIPS ============ */
.tips-section {
  margin-bottom: 20px;
}

.tips-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tip-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 11px 14px;
  transition: background var(--transition), border-color var(--transition);
}

.tip-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

.tip-bullet {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============ DISCLAIMER ============ */
.disclaimer-text {
  font-size: 0.77rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
  margin-bottom: 20px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
}

/* ============ BUTTON SECONDARY ============ */
.btn-secondary {
  width: 100%;
  padding: 14px 24px;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-btn);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--text-primary);
  transform: translateY(-1px);
}

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

.btn-secondary:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
}

/* ============ FOOTER ============ */
.site-footer {
  width: 100%;
  text-align: center;
  padding: 24px 16px 32px;
  margin-top: auto;
}

.footer-brand {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 380px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.35);
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(139, 92, 246, 0.6);
}

/* ============ NUMBER INPUT – hapus arrows ============ */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  -moz-appearance: textfield;
}

/* ============ RESPONSIVE – TABLET ============ */
@media (max-width: 600px) {
  .main-wrapper {
    padding: 24px 12px 24px;
  }

  .card-header {
    padding: 32px 20px 20px;
  }

  .brand-title {
    font-size: 2rem;
  }

  .brand-subtitle {
    font-size: 0.78rem;
  }

  .brand-desc {
    font-size: 0.88rem;
  }

  .moon-badge {
    font-size: 2.6rem;
  }

  .form-section {
    padding: 0 20px 24px;
  }

  .result-section {
    padding: 24px 20px 28px;
  }

  .result-divider {
    margin: 0 20px;
  }

  .time-value {
    font-size: 1.8rem;
  }

  .info-value {
    font-size: 1.3rem;
  }
}

@media (max-width: 380px) {
  .brand-title {
    font-size: 1.75rem;
  }

  .time-value {
    font-size: 1.5rem;
  }

  .result-times-grid,
  .result-info-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ AI RECOMMENDATION SECTION ============ */
.ai-recommendation-section {
  margin-bottom: 20px;
  border-radius: 16px;
  overflow: hidden;
}

.ai-recommendation-section[hidden] {
  display: none;
}

/* Loading state */
.ai-loading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(79, 142, 247, 0.08), rgba(139, 92, 246, 0.08));
  border: 1px solid rgba(79, 142, 247, 0.2);
  border-radius: 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.ai-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(79, 142, 247, 0.2);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

/* AI badge */
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: linear-gradient(135deg, rgba(79, 142, 247, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid rgba(79, 142, 247, 0.3);
  border-radius: 99px;
  margin-bottom: 12px;
}

.ai-badge-fallback {
  background: linear-gradient(135deg, rgba(100, 116, 139, 0.2), rgba(71, 85, 105, 0.2));
  border-color: rgba(100, 116, 139, 0.3);
}

.ai-badge-icon {
  font-size: 0.9rem;
}

.ai-badge-text {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
}

.ai-badge-fallback .ai-badge-text {
  color: var(--text-muted);
}

/* AI teks rekomendasi */
.ai-recommendation-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  white-space: pre-wrap;
  background: linear-gradient(135deg, rgba(79, 142, 247, 0.06), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: 12px;
  padding: 14px 18px;
}