/* --- CSS VARIABLES & THEME --- */
:root {
    /* Colors */
    --bg-dark: #0a0a0f;
    --bg-panel: #14141e;
    
    /* Neon Accents */
    --primary-cyan: #00f2ff;
    --primary-purple: #bd00ff;
    --primary-pink: #ff0055;
    --gradient-main: linear-gradient(135deg, #00f2ff 0%, #bd00ff 100%);
    
    /* Glassmorphism settings */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 20px;
    
    /* Text */
    --text-white: #ffffff;
    --text-gray: #a0a0a5;
    
    /* Spacing */
    --sidebar-width: 260px;
    --header-height: 70px;
}

/* --- RESET & BASE --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-white);
    background: var(--bg-dark); 
    font-size: 16px;
    line-height: 1.5;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button, input, select { font-family: inherit; }

/* --- SIDEBAR STYLING --- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 25px;
    z-index: 100;
}

.brand {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-white);
    letter-spacing: 1px;
}

.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Top Bar Navigation Links */
.nav-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.nav-link-btn i {
    font-size: 1.1rem;
}

.nav-link-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-cyan);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 242, 255, 0.1);
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .nav-link-btn span {
        display: none;
    }
    
    .nav-link-btn {
        padding: 10px;
    }
    
    .user-controls {
        gap: 10px;
    }
}

/* Section Styling for About/Docs Pages */
.page-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-block {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    animation: fadeIn 0.6s ease-out;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-white);
    font-weight: 600;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.info-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
}

.info-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-purple);
    transform: translateY(-3px);
}

.info-card h4 {
    color: var(--primary-cyan);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.info-card p {
    color: var(--text-gray);
    line-height: 1.6;
}


.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--text-gray);
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-item i { font-size: 1.3rem; }

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
}

.nav-item.active {
    background: rgba(0, 242, 255, 0.08);
    border-color: rgba(0, 242, 255, 0.2);
    color: var(--primary-cyan);
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.05);
}

.sidebar-footer {
    font-size: 0.8rem;
    color: var(--text-gray);
    border-top: 1px solid var(--glass-border);
    padding-top: 20px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
    font-size: 0.75rem;
    color: #00ff88;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #00ff88;
    border-radius: 50%;
    box-shadow: 0 0 8px #00ff88;
}

/* --- MAIN CONTENT LAYOUT --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.top-bar {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(10, 10, 15, 0.3);
}

.page-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.user-controls {
    display: flex;
    gap: 20px;
    align-items: center;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-gray);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.2s;
}

.icon-btn:hover { color: var(--text-white); }

.avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: #000;
}

.content-scrollable {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
}

/* --- GLASSMORPHISM COMPONENTS --- */
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

.tool-header {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-gray);
    margin-bottom: 12px;
    font-weight: 600;
}

/* --- BUTTONS --- */
.btn {
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.95rem;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: var(--gradient-main);
    color: #0a0a0f;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.2);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 0 30px rgba(0, 242, 255, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-white);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* --- FORMS & INPUTS --- */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-cyan);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
    margin-top: -6px; /* center thumb */
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: transparent;
    border-radius: 5px;
}

.upload-placeholder {
    text-align: center;
    color: var(--text-gray);
    padding: 40px;
    border: 2px dashed var(--glass-border);
    border-radius: 16px;
    transition: all 0.3s;
}

.upload-placeholder:hover {
    border-color: var(--primary-cyan);
    background: rgba(0, 242, 255, 0.02);
}

/* Download Button Highlight */
.download-highlight {
    background: linear-gradient(135deg, rgba(0, 242, 255, 0.1) 0%, rgba(189, 0, 255, 0.1) 100%) !important;
    border-color: var(--primary-cyan) !important;
    color: var(--primary-cyan) !important;
    position: relative;
    overflow: hidden;
}

.download-highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.download-highlight:hover::before {
    left: 100%;
}

.download-highlight:hover {
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.3) !important;
    transform: translateY(-2px);
}

/* Platform Download Cards */
.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.platform-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 35px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 242, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.platform-card:hover::before {
    opacity: 1;
}

.platform-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-cyan);
    box-shadow: 0 15px 40px rgba(0, 242, 255, 0.15);
}

.platform-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: inline-block;
    position: relative;
    z-index: 1;
}

.platform-name {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-white);
}

.platform-details {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 25px;
    line-height: 1.6;
}

.version-badge {
    display: inline-block;
    background: rgba(0, 242, 255, 0.1);
    border: 1px solid rgba(0, 242, 255, 0.3);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--primary-cyan);
    margin-bottom: 20px;
    font-weight: 600;
}

.file-size {
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-top: 10px;
}

/* Feature List */
.feature-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    text-align: left;
}

.feature-list li {
    color: var(--text-gray);
    line-height: 2.2;
    padding-left: 30px;
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00ff88;
    font-weight: 700;
    font-size: 1.2rem;
}


/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: rgba(0,0,0,0.2); }
::-webkit-scrollbar-thumb { 
    background: rgba(255,255,255,0.15); 
    border-radius: 4px; 
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

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

.fade-in { animation: fadeIn 0.4s ease-out; }