/* Global Design System & Stylesheet */

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

:root {
  --bg-dark-1: #090d16;
  --bg-dark-2: #0f172a;
  --glass-bg: rgba(30, 41, 59, 0.45);
  --glass-border: rgba(255, 255, 255, 0.08);
  --primary-glow: #38bdf8;
  --secondary-glow: #a855f7;
  --success-glow: #10b981;
  --danger-glow: #ef4444;
  --text-light: #f8fafc;
  --text-muted: #94a3b8;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  background: linear-gradient(135deg, var(--bg-dark-1) 0%, var(--bg-dark-2) 100%);
  color: var(--text-light);
  font-family: 'Plus Jakarta Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.5);
}
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.5);
}

/* Glassy Navigation Bar */
.bg-dark-glassy {
  background: rgba(15, 23, 42, 0.65) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

.branding-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  color: var(--text-light) !important;
}

.text-primary-glow {
  color: var(--primary-glow);
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.nav-btn {
  color: var(--text-muted) !important;
  font-weight: 500;
  border-radius: 50px;
  padding: 0.5rem 1.25rem !important;
  transition: var(--transition-smooth);
}

.nav-btn:hover, .nav-btn.active {
  color: var(--text-light) !important;
  background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
  border: 1px solid var(--glass-border);
}

/* Typography & Headings */
.main-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 2.75rem;
  letter-spacing: -1px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-glow) 0%, var(--secondary-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 15px 40px -5px rgba(0, 0, 0, 0.6);
}

.card-header-custom {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
}

.card-body-custom {
  padding: 1.5rem;
}

/* Styled Form Controls */
.form-control, .form-select {
  background: rgba(15, 23, 42, 0.6) !important;
  color: var(--text-light) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: 12px !important;
  padding: 0.75rem 1rem;
  transition: var(--transition-smooth);
}

.form-control::placeholder {
  color: var(--text-muted) !important;
  opacity: 0.8;
}

.form-control:focus, .form-select:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25) !important;
  border-color: var(--primary-glow) !important;
}

/* Switch styling */
.form-switch .form-check-input {
  background-color: rgba(15, 23, 42, 0.6);
  border-color: var(--glass-border);
  height: 1.5em;
  width: 2.75em;
  border-radius: 2em;
  transition: var(--transition-smooth);
}

.form-switch .form-check-input:checked {
  background-color: var(--primary-glow);
  border-color: var(--primary-glow);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
}

/* Custom buttons */
.btn {
  font-weight: 600;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-glow) 0%, #0284c7 100%);
  border: none;
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
  transform: translateY(-2px);
}

.btn-outline-primary {
  color: var(--primary-glow);
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(56, 189, 248, 0.02);
}

.btn-outline-primary:hover:not(:disabled) {
  background: var(--primary-glow);
  color: #0f172a;
  border-color: var(--primary-glow);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

.btn-outline-success {
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.02);
}

.btn-outline-success:hover:not(:disabled) {
  background: #34d399;
  color: #0f172a;
  border-color: #34d399;
  box-shadow: 0 0 15px rgba(52, 211, 153, 0.4);
  transform: translateY(-2px);
}

.btn-outline-danger {
  color: #f87171;
  border-color: rgba(248, 113, 113, 0.4);
  background: rgba(248, 113, 113, 0.02);
}

.btn-outline-danger:hover:not(:disabled) {
  background: #ef4444;
  color: var(--text-light);
  border-color: #ef4444;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.4);
  transform: translateY(-2px);
}

.btn-dark-glassy {
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-light);
  border: 1px solid var(--glass-border);
  transition: var(--transition-smooth);
}

.btn-dark-glassy:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-dark-glassy:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Ranges / Sliders */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}

input[type="range"]:focus {
  outline: none;
}

input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  cursor: pointer;
  background: rgba(15, 23, 42, 0.6);
  border-radius: 3px;
  border: 1px solid var(--glass-border);
}

input[type="range"]::-webkit-slider-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: var(--primary-glow);
  cursor: pointer;
  -webkit-appearance: none;
  margin-top: -6px;
  box-shadow: 0 0 8px var(--primary-glow);
  transition: var(--transition-smooth);
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--text-light);
  transform: scale(1.15);
}

/* Checkerboard Preview Area */
.preview-area {
  min-height: 250px;
  border-radius: 12px;
  border: 1px dashed var(--glass-border);
  overflow: hidden;
  background-color: #0b0f19;
  background-image:
    linear-gradient(45deg, #121824 25%, transparent 25%),
    linear-gradient(-45deg, #121824 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #121824 75%),
    linear-gradient(-45deg, transparent 75%, #121824 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  transition: var(--transition-smooth);
}

/* Modals */
.modal-content-dark {
  background: #0f172a;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
}

.modal-preview-body {
  min-height: 400px;
  background: #090d16;
  background-image:
    linear-gradient(45deg, #0f172a 25%, transparent 25%),
    linear-gradient(-45deg, #0f172a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #0f172a 75%),
    linear-gradient(-45deg, transparent 75%, #0f172a 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0px;
}

/* Toast popup feedback message */
.toast-custom {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--success-glow);
  color: var(--text-light);
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 15px rgba(16, 185, 129, 0.2);
  z-index: 2000;
  display: flex;
  align-items: center;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

#toastIcon {
  color: var(--success-glow);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}