/* ==========================================================================
   Coach Smith - Design System & Base Styling
   Theme: Aero Cockpit Slate & Modern Executive Coaching
   ========================================================================== */

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

:root {
  /* Safe Area Insets for iOS & Android */
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --bottom-nav-height: 64px;

  /* Color Palette */
  --bg-primary: #070d1e;
  --bg-surface: #0e172e;
  --bg-surface-elevated: #162244;
  --bg-surface-glass: rgba(14, 23, 46, 0.88);
  
  --border-subtle: #1e2d52;
  --border-focus: #00e5ff;
  --border-accent: rgba(0, 229, 255, 0.35);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Cockpit & Aviation Signal Accents */
  --accent-cyan: #00e5ff;
  --accent-cyan-glow: rgba(0, 229, 255, 0.25);
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.2);
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-blue: #3b82f6;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout & Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Shadow & Glow */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-cyan: 0 0 20px rgba(0, 229, 255, 0.2);

  /* Transitions (Standardized 250ms ease-in-out) */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-bounce: 350ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Light Mode Overrides */
[data-theme='aero-light'] {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-glass: rgba(255, 255, 255, 0.92);
  --border-subtle: #e2e8f0;
  --border-focus: #0284c7;
  --border-accent: rgba(2, 132, 199, 0.3);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent-cyan: #0284c7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.15);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-primary);
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow-x: hidden;
  overscroll-behavior-y: none;
}

body {
  min-height: 100%;
  min-height: -webkit-fill-available;
  min-height: 100dvh;
  width: 100%;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom));
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

/* Typography Hierarchy (Fluid Scaling) */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(1.75rem, 4.5vw, 2.5rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.4rem, 3.5vw, 1.85rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.15rem, 2.8vw, 1.35rem); letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; }

p {
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

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

/* App Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: var(--bg-surface-glass);
  border-bottom: 1px solid var(--border-subtle);
  padding-top: calc(0.75rem + var(--safe-top));
  padding-bottom: 0.75rem;
  padding-left: max(1rem, var(--safe-left));
  padding-right: max(1rem, var(--safe-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0b1e42 0%, #00e5ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-cyan);
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  background-color: rgba(0, 229, 255, 0.12);
  color: var(--accent-cyan);
  border: 1px solid var(--border-accent);
  text-transform: uppercase;
}

/* Header Action Icons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-icon {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  -webkit-tap-highlight-color: transparent;
}

.btn-icon:active {
  transform: scale(0.92);
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

/* Desktop Navigation Tabs (Hidden on Mobile by default) */
.nav-tabs {
  display: none;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--bg-surface-elevated);
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
}

.nav-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-normal);
  -webkit-tap-highlight-color: transparent;
}

.nav-tab-btn:hover {
  color: var(--text-main);
}

.nav-tab-btn.active {
  background-color: var(--accent-cyan);
  color: #070d1e;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(0, 229, 255, 0.3);
}

/* Fixed Mobile Bottom Navigation Bar */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: calc(var(--bottom-nav-height) + var(--safe-bottom));
  padding-top: 6px;
  padding-bottom: calc(6px + var(--safe-bottom));
  padding-left: max(12px, var(--safe-left));
  padding-right: max(12px, var(--safe-right));
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-around;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.45);
  transition: transform var(--transition-normal);
}

.mobile-nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 4px;
  border-radius: var(--radius-md);
  cursor: pointer;
  gap: 3px;
  transition: all var(--transition-normal);
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-btn:active {
  transform: scale(0.92);
}

.mobile-nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-normal), color var(--transition-normal);
}

.mobile-nav-label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition-normal);
}

.mobile-nav-btn.active {
  color: var(--accent-cyan);
}

.mobile-nav-btn.active .mobile-nav-icon {
  color: var(--accent-cyan);
  transform: translateY(-1px);
  filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.4));
}

.mobile-nav-btn.active .mobile-nav-label {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* Mobile Nav Peek Handle (Indicator / Clue) */
.mobile-nav-peek-handle {
  display: none;
  position: absolute;
  top: -26px;
  left: 50%;
  transform: translateX(-50%);
  height: 26px;
  padding: 0 16px;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-accent);
  border-bottom: none;
  border-radius: 13px 13px 0 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 -4px 16px rgba(0, 229, 255, 0.28);
  transition: all var(--transition-normal);
  z-index: 920;
  -webkit-tap-highlight-color: transparent;
}

.peek-handle-bar {
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.peek-handle-hint {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

/* Front Page (Onboarding) Specific Overrides: Hide header & auto-hide lower menu bar */
body[data-active-view="onboarding"] .app-header {
  display: none !important;
}

body[data-active-view="onboarding"] .mobile-bottom-nav {
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

body[data-active-view="onboarding"] .mobile-bottom-nav .mobile-nav-peek-handle {
  display: flex;
}

body[data-active-view="onboarding"] .mobile-bottom-nav.expanded,
body[data-active-view="onboarding"] .mobile-bottom-nav:focus-within {
  transform: translateY(0);
}

body[data-active-view="onboarding"] .mobile-bottom-nav.expanded .peek-handle-bar {
  background-color: var(--accent-amber);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
}

/* Main Content Container (Mobile-First) */
.app-main {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem max(1rem, var(--safe-right)) 1.5rem max(1rem, var(--safe-left));
  box-sizing: border-box;
}

/* View Containers */
.view-panel {
  display: none;
  animation: fadeIn 0.25s ease-in-out forwards;
}

.view-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Standard Buttons (Full width on mobile, Auto on larger screens) */
.btn {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: #070d1e;
  box-shadow: 0 4px 14px rgba(0, 229, 255, 0.25);
}
.btn-primary:hover {
  background-color: #38e9ff;
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.4);
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-subtle);
}
.btn-secondary:hover {
  background-color: #1e2d52;
  border-color: var(--accent-cyan);
}

.btn-outline-amber {
  background: transparent;
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber);
}
.btn-outline-amber:hover {
  background-color: var(--accent-amber-glow);
}

.btn-sm {
  font-size: 0.825rem;
  padding: 0.45rem 0.85rem;
}

.btn-lg {
  font-size: 1.05rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-lg);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 0.75rem);
  left: max(1rem, var(--safe-left));
  right: max(1rem, var(--safe-right));
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--accent-cyan);
  color: var(--text-main);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  animation: slideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

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

/* ==========================================================================
   Responsive Breakpoints: 480px, 768px, 1024px
   ========================================================================== */

/* Breakpoint 1: 480px (Standard & Large Mobile / Phablet Transition) */
@media (min-width: 480px) {
  .app-header {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .app-main {
    padding: 1.25rem;
  }
  .brand-title {
    font-size: 1.25rem;
  }
}

/* Breakpoint 2: 768px (Tablets / Foldables / iPad Portrait) */
@media (min-width: 768px) {
  .app-header {
    padding: 0.85rem 1.75rem;
  }
  .app-main {
    padding: 1.75rem;
  }
  .btn {
    width: auto;
    display: inline-flex;
  }
  .toast-container {
    left: auto;
    right: 1.5rem;
    max-width: 380px;
  }
}

/* Breakpoint 3: 1024px (Desktops / Laptops / iPad Pro Landscape) */
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
  .mobile-bottom-nav {
    display: none;
  }
  .nav-tabs {
    display: flex;
  }
  .toast-container {
    bottom: 1.5rem;
  }
  .app-main {
    padding: 2rem;
  }
}

/* ==========================================================================
   iPhone PWA Standalone & Dynamic Viewport Enhancements
   ========================================================================== */
@media (display-mode: standalone) {
  html, body {
    height: 100dvh;
    overflow-x: hidden;
  }
  .app-header {
    padding-top: calc(0.85rem + var(--safe-top));
  }
}