/* =================================================================
   FITPULSE AI PRO - 1ST-PLACE AWARD WINNING DESIGN SYSTEM
   Dark Glassmorphic UI/UX, Dynamic Gradients, Responsive Architecture
================================================================= */

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

:root {
  --bg-main: #070a12;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-glass: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(6, 182, 212, 0.3);

  --primary-cyan: #06b6d4;
  --primary-emerald: #10b981;
  --primary-amber: #f59e0b;
  --primary-rose: #f43f5e;
  --primary-purple: #8b5cf6;

  --gradient-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-purple: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --font-family: 'Readex Pro', system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  direction: rtl;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.12) 0%, transparent 45%);
  background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.6);
}
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-cyan);
}

/* Top Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-cyan);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: var(--shadow-glow);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-profile-badge {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-profile-badge:hover {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

/* Navigation Tabs Header */
.tab-navigation {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 2rem 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--border-glass);
  scrollbar-width: none;
}

.tab-navigation::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  padding: 0.85rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-tab.active {
  color: var(--primary-cyan);
  border-bottom-color: var(--primary-cyan);
  font-weight: 600;
}

/* Main Container Layout */
.app-container {
  max-width: 1350px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dashboard & Cards Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.6);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-card);
  opacity: 0.5;
}

.glass-card.card-cyan::before { background: var(--gradient-cyan); opacity: 1; }
.glass-card.card-emerald::before { background: var(--gradient-emerald); opacity: 1; }
.glass-card.card-purple::before { background: var(--gradient-purple); opacity: 1; }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-cyan);
}

/* Stat Rings & Gauges */
.stat-ring-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 1rem 0;
}

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

.stat-value {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.1;
}

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

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* Form Controls */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

select.form-control {
  cursor: pointer;
}

/* Buttons */
.btn {
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--gradient-cyan);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.5);
}

.btn-emerald {
  background: var(--gradient-emerald);
  color: white;
}

.btn-purple {
  background: var(--gradient-purple);
  color: white;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-full {
  width: 100%;
}

/* Badges & Pills */
.badge {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.badge-emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-cyan { background: rgba(6, 182, 212, 0.15); color: #38bdf8; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-rose { background: rgba(244, 63, 94, 0.15); color: #f87171; border: 1px solid rgba(244, 63, 94, 0.3); }

/* Quick Action FAB Button */
.fab-quick-action {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 99;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-cyan);
  color: white;
  border: none;
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.5);
  font-size: 1.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fab-quick-action:hover {
  transform: scale(1.1) rotate(90deg);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: #0f172a;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  max-width: 650px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Interactive SVG Canvas Graphs */
.chart-container {
  width: 100%;
  height: 220px;
  margin-top: 1rem;
}

/* Body Pain Map Interactive Area */
.body-map-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.body-part-card {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.body-part-card:hover, .body-part-card.active {
  border-color: var(--primary-cyan);
  background: rgba(6, 182, 212, 0.1);
  transform: translateY(-2px);
}

.body-part-icon {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.app-disclaimer {
  max-width: 1200px;
  margin: 2.5rem auto 6rem;
  padding: 0 1.5rem;
  text-align: center;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-muted);
  opacity: 0.85;
}

/* Auth Modal Tabs */
.auth-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-glass);
}

.auth-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--primary-cyan);
  border-bottom-color: var(--primary-cyan);
}

.auth-error {
  color: #f87171;
  font-size: 0.85rem;
  margin-top: 0.75rem;
  min-height: 1em;
}

/* Equipment Picker Chips */
.equipment-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

.equipment-chip {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.equipment-chip.selected {
  border-color: var(--primary-cyan);
  background: rgba(6, 182, 212, 0.15);
  color: #38bdf8;
}

/* Exercise Detail Modal: Video + Muscle Diagram */
.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
  margin-bottom: 1.5rem;
}

.video-wrapper iframe {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  border: none;
}

.muscle-diagram-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.muscle-diagram-views {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.muscle-body-figure {
  position: relative;
  width: 130px;
}

.muscle-body-img {
  display: block;
  width: 100%;
  height: auto;
  filter: brightness(1.5) contrast(1.15) drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
}

.muscle-overlay-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

.muscle-zone {
  stroke: none;
  transition: fill 0.15s ease, opacity 0.15s ease;
}

.muscle-zone-clickable {
  cursor: pointer;
  pointer-events: all;
}

.muscle-zone-clickable:hover {
  fill: rgba(6, 182, 212, 0.35) !important;
}

/* Interactive Muscle Explorer (browse-by-muscle) */
.muscle-explorer .muscle-diagram-views {
  gap: 2.5rem;
}

.muscle-view-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.muscle-explorer .muscle-body-figure {
  width: 190px;
}

.muscle-view-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.muscle-explorer-hint {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

.muscle-diagram-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-chip i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.legend-names {
  width: 100%;
  text-align: center;
  font-size: 0.78rem;
  opacity: 0.8;
}

/* Exercise Full-Detail Text Blocks */
.detail-block {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border-right: 3px solid var(--primary-cyan);
  background: rgba(6, 182, 212, 0.05);
}

.detail-block-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.detail-block p, .detail-block ul {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-right: 1rem;
}

/* Workout Log Section */
.log-section {
  border-top: 1px solid var(--border-glass);
  padding-top: 1.25rem;
  margin-top: 0.5rem;
}

.log-set-row {
  display: grid;
  grid-template-columns: auto 1fr 1fr auto;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.log-set-row input {
  padding: 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
}

.log-set-row .remove-set-btn {
  background: transparent;
  border: none;
  color: #f87171;
  cursor: pointer;
  font-size: 1.1rem;
}

/* Responsive Rules */
@media (max-width: 768px) {
  .navbar { padding: 1rem; }
  .app-container { padding: 0 1rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .fab-quick-action { bottom: 1.5rem; left: 1.5rem; width: 52px; height: 52px; }
}