:root {
  --bg-color: #0b0f19;
  --bg-card: rgba(16, 24, 39, 0.7);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --neon-blue: #00f0ff;
  --neon-purple: #b026ff;
  --neon-green: #00ff88;
  --border-color: rgba(0, 240, 255, 0.2);
  --glass-blur: blur(12px);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(0, 240, 255, 0.05), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(176, 38, 255, 0.05), transparent 25%);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
}

/* Glassmorphism utility */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: 0.5px;
}

.text-gradient {
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header */
header {
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  margin-bottom: 2rem;
}

/* Global Message Banner */
#global-message {
  display: none;
  background: linear-gradient(90deg, rgba(176, 38, 255, 0.2), rgba(0, 240, 255, 0.2));
  border-left: 4px solid var(--neon-blue);
  padding: 1rem 2rem;
  margin: 0 auto 2rem;
  max-width: 800px;
  border-radius: 0 8px 8px 0;
  font-weight: 500;
  animation: glow 3s infinite alternate;
}

@keyframes glow {
  0% { box-shadow: 0 0 5px rgba(0,240,255,0.2); }
  100% { box-shadow: 0 0 15px rgba(0,240,255,0.4); }
}

/* App Selector */
.app-selector {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.app-btn {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.app-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--neon-blue);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.app-btn.active {
  background: rgba(0, 240, 255, 0.2);
  border-color: var(--neon-blue);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

/* Video Grid */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.video-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 240, 255, 0.2);
  border-color: var(--neon-purple);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
}

.video-container.vertical {
  padding-bottom: 177.77%; /* 9:16 Aspect Ratio */
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.video-info {
  padding: 1.5rem;
  flex-grow: 1;
}

.video-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--neon-blue);
}

.video-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Forms & Admin */
.admin-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

input[type="text"], 
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 0.75rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-color);
  color: white;
  border-radius: 8px;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--neon-blue);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.btn {
  background: var(--neon-blue);
  color: #000;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
}

.btn:hover {
  box-shadow: 0 0 15px var(--neon-blue);
  transform: scale(1.02);
}

.btn-danger {
  background: transparent;
  color: #ff4757;
  border: 1px solid #ff4757;
}
.btn-danger:hover {
  background: rgba(255, 71, 87, 0.1);
  box-shadow: 0 0 15px rgba(255, 71, 87, 0.4);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
th {
  color: var(--neon-purple);
}

.hidden { display: none !important; }

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #0b0f19;
    border: 1px solid var(--neon-blue);
    width: 90%;
    max-width: 600px;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.2);
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.modal-title {
    font-size: 1.5rem;
    color: var(--neon-blue);
}

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

.btn-close-modal:hover {
    color: white;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}