/* --- CSS Variables & Theming --- */
:root {
    --primary-color: #DE2525; /* TubeVer Red */
    --secondary-color: #555555;
    --bg-light: #ffffff;
    --text-light: #333333;
    --card-bg-light: #f8f9fa;
    
    --bg-dark: #121212;
    --text-dark: #f0f0f0;
    --card-bg-dark: #1e1e1e;
    
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

/* Light Theme Overrides */
[data-bs-theme="light"] {
    --bs-body-bg: var(--bg-light);
    --bs-body-color: var(--text-light);
    --bs-tertiary-bg: #f8f9fa;
}

/* Dark Theme Overrides (Default in HTML) */
[data-bs-theme="dark"] {
    --bs-body-bg: var(--bg-dark);
    --bs-body-color: var(--text-dark);
    --bs-primary: var(--primary-color);
    --bs-primary-rgb: 222, 37, 37;
    --bs-tertiary-bg: #1a1a1a;
}

/* --- Global Styles --- */
body {
    font-family: var(--font-body);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: var(--font-heading);
}

.section-padding {
    padding-top: 100px;
    padding-bottom: 100px;
}

.text-primary {
    color: var(--primary-color) !important;
}
.bg-primary {
    background-color: var(--primary-color) !important;
    color: #fff !important;
}
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
}
.btn-primary:hover {
    background-color: #ba1e1e;
    border-color: #ba1e1e;
    color: #fff;
}
.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* --- Navbar --- */
.tubever-nav {
    backdrop-filter: blur(10px);
    background-color: rgba(var(--bs-body-bg-rgb), 0.9);
    border-bottom: 1px solid rgba(222, 37, 37, 0.1);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.theme-btn {
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

/* --- Hero Section Background --- */
.hero-bg {
    background: radial-gradient(circle at center, rgba(222, 37, 37, 0.08) 0%, transparent 70%);
}

.hero-subtitle {
    max-width: 600px;
    margin: 0 auto;
}

/* --- Custom Rounded Buttons --- */
.tube-btn, .tube-btn-outline {
    font-family: var(--font-heading);
    border-radius: 50px;
    padding: 12px 32px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(222, 37, 37, 0.2);
}
.tube-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(222, 37, 37, 0.4);
}
.tube-btn-outline {
    box-shadow: none;
}

/* --- Terminal Card (Adjusted for clean look) --- */
.terminal-card {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
[data-bs-theme="dark"] .terminal-card {
    background-color: #1a1a1a;
    border-color: #2d2d2d;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

/* --- Feature Cards --- */
.feature-card {
    background-color: var(--card-bg-light);
    border: 1px solid rgba(222, 37, 37, 0.1) !important;
    border-radius: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(222, 37, 37, 0.15);
    border-color: rgba(222, 37, 37, 0.3) !important;
}
[data-bs-theme="dark"] .feature-card {
    background-color: var(--card-bg-dark);
}
.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    background-color: rgba(222, 37, 37, 0.1);
    color: var(--primary-color);
}
.feature-icon.bg-success {
    background-color: rgba(25, 135, 84, 0.1) !important;
    color: #198754 !important;
}
.feature-icon.bg-warning {
    background-color: rgba(255, 193, 7, 0.1) !important;
    color: #ffc107 !important;
}

/* --- Wheel Game CSS --- */
.wheel-container {
    position: relative;
    width: 300px;
    height: 300px;
}
.wheel {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    border: 5px solid var(--bs-body-color);
    box-shadow: 0 0 20px rgba(222, 37, 37, 0.15);
    transition: transform 3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.wheel-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--bs-body-bg);
    border: 3px solid var(--bs-body-color);
    border-radius: 50%;
    z-index: 10;
}
.wheel-segment {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 50%;
    transform-origin: 0% 100%;
}
/* Approximating segments with CSS transforms for a 6-slice wheel */
.wheel-segment:nth-child(1) { transform: rotate(0deg) skewY(-30deg); background-color: #DE2525; }
.wheel-segment:nth-child(2) { transform: rotate(60deg) skewY(-30deg); background-color: #f8f9fa; }
.wheel-segment:nth-child(3) { transform: rotate(120deg) skewY(-30deg); background-color: #555555; }
.wheel-segment:nth-child(4) { transform: rotate(180deg) skewY(-30deg); background-color: #DE2525; }
.wheel-segment:nth-child(5) { transform: rotate(240deg) skewY(-30deg); background-color: #f8f9fa; }
.wheel-segment:nth-child(6) { transform: rotate(300deg) skewY(-30deg); background-color: #555555; }

.wheel-pointer {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 30px solid var(--primary-color);
    z-index: 20;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}