/* ==========================================================
   Website Speed Test Tool - Glassmorphism UI Design System
   Compatible with Bootstrap 5 | allin1prosolution.site
   ========================================================== */

:root {
  --bg-gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  --bg-gradient-light: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #f1f5f9 100%);
  
  --glass-bg-dark: rgba(30, 41, 59, 0.65);
  --glass-border-dark: rgba(255, 255, 255, 0.12);
  --glass-shadow-dark: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --glass-bg-light: rgba(255, 255, 255, 0.75);
  --glass-border-light: rgba(255, 255, 255, 0.6);
  --glass-shadow-light: 0 8px 32px 0 rgba(31, 38, 135, 0.1);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;

  --score-green: #10b981;
  --score-yellow: #f59e0b;
  --score-red: #ef4444;
}

[data-theme="light"] {
  --text-main: #0f172a;
  --text-muted: #64748b;
  --glass-bg: var(--glass-bg-light);
  --glass-border: var(--glass-border-light);
  --glass-shadow: var(--glass-shadow-light);
  body {
    background: var(--bg-gradient-light) !important;
    color: var(--text-main);
  }
}

[data-theme="dark"], body {
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: var(--glass-bg-dark);
  --glass-border: var(--glass-border-dark);
  --glass-shadow: var(--glass-shadow-dark);
  background: var(--bg-gradient-dark);
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
}

/* Glassmorphism Card Element */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 12px 40px 0 rgba(99, 102, 241, 0.2);
}

/* Hero Section */
.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(90deg, #38bdf8, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.15rem;
}

/* Input Form Box */
.scan-input-group {
  background: rgba(15, 23, 42, 0.5);
  border: 2px solid rgba(99, 102, 241, 0.3);
  border-radius: 1rem;
  padding: 0.5rem;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
  transition: all 0.3s ease;
}

.scan-input-group:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
}

.scan-input-group .form-control {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.1rem;
  padding-left: 1.25rem;
}

.scan-input-group .form-control:focus {
  outline: none;
  box-shadow: none;
}

.btn-scan {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  border: none;
  color: #ffffff;
  font-weight: 700;
  border-radius: 0.75rem;
  padding: 0.85rem 2rem;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
  transition: all 0.25s ease;
}

.btn-scan:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

/* Circular Score Gauge */
.score-circle-container {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto;
}

.score-circle-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.score-circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 10;
}

.score-circle-val {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 339.292; /* 2 * PI * 54 */
  stroke-dashoffset: 339.292;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.score-number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.25rem;
  font-weight: 800;
}

.score-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Grade Badge */
.grade-badge-huge {
  font-size: 4rem;
  font-weight: 900;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  box-shadow: 0 0 30px currentColor;
}

.grade-A-plus, .grade-A { color: #10b981; border: 3px solid #10b981; }
.grade-B { color: #3b82f6; border: 3px solid #3b82f6; }
.grade-C { color: #f59e0b; border: 3px solid #f59e0b; }
.grade-D { color: #f97316; border: 3px solid #f97316; }
.grade-F { color: #ef4444; border: 3px solid #ef4444; }

/* Stat Card */
.stat-card {
  padding: 1.25rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

/* Loading Overlay Animation */
#scanLoadingOverlay {
  display: none;
}

.scanner-ring {
  width: 90px;
  height: 90px;
  border: 6px solid rgba(99, 102, 241, 0.2);
  border-top-color: #6366f1;
  border-bottom-color: #ec4899;
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
  margin: 0 auto 1.5rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.step-indicator {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: opacity 0.3s ease;
}

/* Recommendation Badge */
.priority-High { background: rgba(239, 68, 68, 0.2); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.4); }
.priority-Medium { background: rgba(245, 158, 11, 0.2); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.4); }
.priority-Low { background: rgba(59, 130, 246, 0.2); color: #3b82f6; border: 1px solid rgba(59, 130, 246, 0.4); }

/* Custom Accordions */
.accordion-glass .accordion-item {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.75rem !important;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.accordion-glass .accordion-button {
  background: transparent;
  color: var(--text-main);
  box-shadow: none;
}

.accordion-glass .accordion-button:not(.collapsed) {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
}

/* Navbar Theme Toggle */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}