/* ================================================================
   REEFMIND BETA — GLOBAL STYLES
   Dark theme, mobile-first, touch-friendly, PWA-ready
   ================================================================ */

/* PWA Safe Areas (iPhone notch, home indicator) */
html {
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Prevent overscroll bounce in standalone mode */
@media (display-mode: standalone) {
  body {
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
  }
}

/* Smooth transitions for app-like feel */
.page-transition {
  animation: fadeIn 0.2s ease-in;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ================================================================
   CSS VARIABLES
   ================================================================ */
:root {
  --bg-deep: #060a14;
  --bg-base: #0a0e1a;
  --bg-card: rgba(14, 20, 38, 0.75);
  --bg-card-hover: rgba(20, 28, 50, 0.85);
  --bg-light: rgba(20, 28, 50, 0.65);
  --border: rgba(255,255,255,0.06);
  --border-glow: rgba(0,212,170,0.15);
  --teal: #00d4aa;
  --teal-dim: rgba(0,212,170,0.15);
  --coral: #ff6b35;
  --coral-dim: rgba(255,107,53,0.15);
  --blue: #4da6ff;
  --blue-dim: rgba(77,166,255,0.15);
  --purple: #a78bfa;
  --purple-dim: rgba(167,139,250,0.15);
  --pink: #f472b6;
  --pink-dim: rgba(244,114,182,0.15);
  --yellow: #fbbf24;
  --yellow-dim: rgba(251,191,36,0.15);
  --red: #ef4444;
  --green: #22c55e;
  --green-dim: rgba(34,197,94,0.15);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-bright: #f8fafc;
  --glass-blur: 20px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  height: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.5;
  margin: 0;
  /* PWA flex column layout — bottom nav always visible */
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh; /* dynamic viewport — handles Android Chrome address bar */
  overflow: hidden;

}

/* Scrollable area: header + main content. Nav sits below. */
.app-scroll {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  min-height: 0; /* critical for flex child to scroll properly */
}

/* ================================================================
   ANIMATED BACKGROUND
   ================================================================ */
.bg-orbs {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-orbs .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.12;
  animation: orbFloat 20s ease-in-out infinite;
}

.bg-orbs .orb:nth-child(1) {
  width: 600px;
  height: 600px;
  background: var(--teal);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.bg-orbs .orb:nth-child(2) {
  width: 500px;
  height: 500px;
  background: var(--coral);
  top: 30%;
  right: -10%;
  animation-delay: -7s;
}

.bg-orbs .orb:nth-child(3) {
  width: 700px;
  height: 700px;
  background: var(--blue);
  bottom: -15%;
  left: 30%;
  animation-delay: -14s;
}

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

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

/* ================================================================
   HEADER
   ================================================================ */
.header {
  position: relative;
  z-index: 10;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0,212,170,0.08) 0%, rgba(77,166,255,0.05) 50%, rgba(255,107,53,0.05) 100%);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px 16px;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-title h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-title .subtitle {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.btn-icon:hover, .btn-icon:active {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
}

.version-badge {
  font-size: 0.7rem;
  padding: 4px 12px;
  border-radius: 12px;
  background: var(--teal-dim);
  color: var(--teal);
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

/* ================================================================
   CONTAINER
   ================================================================ */
.container {
  position: relative;
  z-index: 5;
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px 16px 20px;
}

/* ================================================================
   CARDS
   ================================================================ */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  animation: fadeUp 0.6s ease both;
  margin-bottom: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-bright);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-badge {
  font-size: 0.65rem;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-teal { background: var(--teal-dim); color: var(--teal); }
.badge-coral { background: var(--coral-dim); color: var(--coral); }
.badge-purple { background: var(--purple-dim); color: var(--purple); }
.badge-blue { background: var(--blue-dim); color: var(--blue); }

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: white;
  box-shadow: 0 4px 16px rgba(0,212,170,0.3);
}

.btn-primary:hover, .btn-primary:active {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,212,170,0.4);
}

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

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

.btn-secondary:hover, .btn-secondary:active {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--teal);
  border: 1px solid var(--teal);
}

.btn-ghost:hover, .btn-ghost:active {
  background: var(--teal-dim);
}

.btn-full {
  width: 100%;
}

/* ================================================================
   FORMS
   ================================================================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.2s;
  min-height: 48px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-dim);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

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

.password-input-wrapper .form-input {
  padding-right: 48px;
}

.password-toggle {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: color 0.2s;
  min-height: auto;
}

.password-toggle:hover {
  color: var(--text-bright);
}

.form-error {
  color: var(--red);
  font-size: 0.8rem;
  margin-top: 6px;
  display: none;
}

.form-error.active {
  display: block;
}

/* ================================================================
   LOADING SPINNER
   ================================================================ */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--teal-dim);
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6,10,20,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.loading-overlay .spinner {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

.loading-text {
  color: var(--text);
  font-size: 0.9rem;
}

/* ================================================================
   MODAL
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6,10,20,0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,0.6);
  transform: scale(0.95);
  transition: transform 0.3s;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-bright);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.modal-close:hover {
  background: var(--bg-deep);
  color: var(--text);
}

/* ================================================================
   TABS
   ================================================================ */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 12px 24px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  -webkit-tap-highlight-color: transparent;
}

.tab.active {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ================================================================
   PROGRESS BAR
   ================================================================ */
.progress-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
}

.progress-step {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.progress-step.active::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--teal), var(--blue));
  animation: progressFill 0.5s ease-in-out;
}

@keyframes progressFill {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* ================================================================
   JARGON TOOLTIPS
   ================================================================ */
.jargon {
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
  cursor: help;
  color: var(--teal);
  position: relative;
}

.jargon:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 12px;
  background: var(--bg-base);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  font-size: 0.75rem;
  color: var(--text);
  white-space: normal;
  width: 250px;
  z-index: 100;
  margin-bottom: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

/* ================================================================
   MOBILE RESPONSIVE
   ================================================================ */
@media (max-width: 640px) {
  .container {
    padding: 16px 12px 80px;
  }
  
  .header {
    padding: 16px 12px 12px;
  }
  
  .header-title h1 {
    font-size: 1.3rem;
  }
  
  .card {
    padding: 16px;
  }
  
  .btn {
    font-size: 0.9rem;
    padding: 10px 20px;
  }
  
  .tab {
    padding: 10px 16px;
    font-size: 0.85rem;
  }
}