.glass-input[type="file"]::-webkit-file-upload-button {
    background: #222;
    color: #fff;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 0.5em 1.2em;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s;
}
.glass-input[type="file"]::-webkit-file-upload-button:hover {
    background: #444;
}
.glass-input[type="file"]::file-selector-button {
    background: #222;
    color: #fff;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 0.5em 1.2em;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s;
}
.glass-input[type="file"]::file-selector-button:hover {
    background: #444;
}
/* Black & White Theme with Glass Morphism */

:root {
    --primary-color: #ffffff;
    --secondary-color: #1a1a1a;
    --dark-bg: #000000;
    --light-text: #ffffff;
    --secondary-text: #b3b3b3;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --accent: #e0e0e0;
}

* {
    --bs-body-bg: #000000;
    --bs-body-color: #ffffff;
}

body.dark-theme {
    background-color: var(--dark-bg);
    color: var(--light-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}

/* Navbar Styling */
.navbar {
    background-color: var(--dark-bg) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    color: var(--light-text) !important;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    transition: transform 0.2s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-size: cover;
    background-position: center;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    padding-left: 10px;
    padding-right: 10px;
    opacity: 0.15;
    transition: 0.5s ease;
}
.hero-image:hover {
    height: 350px;
    opacity: 1;
    transition: 0.5s ease;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.gradient-text {
    color: var(--light-text);
    font-weight: 700;
    letter-spacing: -1px;
}

/* Features Section */
.features-section {
    background-color: #000000;
}

.bg-dark-secondary {
    background-color: #0a0a0a !important;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    text-align: center;
    height: 100%;
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 40px rgba(255, 255, 255, 0.08);
}

.feature-icon {
    font-size: 3rem;
    color: var(--light-text);
    margin-bottom: 1rem;
}

/* Concept Cards */
.concept-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-left: 4px solid var(--light-text);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.concept-card:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.08);
}

/* Button Styles */
.btn-primary {
    background-color: var(--light-text);
    border-color: var(--light-text);
    color: var(--dark-bg);
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(255, 255, 255, 0.15);
}

.btn-outline-primary {
    color: var(--light-text);
    border-color: var(--light-text);
}

.btn-outline-primary:hover {
    background-color: var(--light-text);
    border-color: var(--light-text);
    color: var(--dark-bg);
}

.btn-light:hover {
    background-color: #e0e0e0 !important;
    color: var(--dark-bg);
}

/* Card Styles */
.card {
    background-color: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--accent);
    box-shadow: 0 20px 50px rgba(255, 255, 255, 0.1);
}

.bg-secondary {
    background-color: var(--glass-bg) !important;
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

.bg-dark {
    background-color: var(--dark-bg) !important;
}

/* Form Styling */
.form-control {
    background-color: var(--glass-bg) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--light-text) !important;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border-radius: 12px;
}

.form-control:focus {
    background-color: rgba(255, 255, 255, 0.12) !important;
    border-color: var(--accent) !important;
    color: var(--light-text) !important;
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.15);
}

.form-control::placeholder {
    color: var(--secondary-text);
}

.form-label {
    color: var(--light-text);
    font-weight: 500;
}

.form-check-input {
    background-color: var(--glass-bg);
    border-color: var(--glass-border);
}

.form-check-input:checked {
    background-color: var(--light-text);
    border-color: var(--light-text);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
}

.bg-gradient-primary {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(20px);
    border: 1px solid var(--accent);
}

/* Text Colors */
.text-light {
    color: var(--light-text) !important;
}

.text-secondary {
    color: var(--secondary-text) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-warning {
    color: #fbbf24 !important;
}

.text-info {
    color: #06b6d4 !important;
}

.text-danger {
    color: #ef4444 !important;
}

.text-success {
    color: #10b981 !important;
}

/* Border Colors */
.border-secondary {
    border-color: rgba(99, 102, 241, 0.1) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
}

/* Footer */
footer {
    background-color: var(--dark-bg) !important;
    border-top: 1px solid var(--glass-border);
}

footer a {
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--light-text) !important;
}

/* Modal Styling */
.modal-content {
    background-color: var(--glass-bg) !important;
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

.modal-header {
    border-bottom: 1px solid var(--glass-border) !important;
}

.modal-footer {
    border-top: 1px solid var(--glass-border) !important;
}

/* Toast Styling */
.toast {
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
    border-radius: 12px;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Sticky Positioning */
.sticky-top {
    position: sticky !important;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.5rem !important;
    }

    .hero-section {
        padding-top: 2rem !important;
    }

    .feature-card {
        padding: 1.5rem;
    }
}

/* Animation Classes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Links */
a {
    color: var(--light-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

/* Min Height Container */
.min-vh-100 {
    min-height: 100vh;
}

/* Error/Success Messages */
.alert {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.alert-danger {
    border-color: #ff6b6b;
}

.alert-success {
    border-color: #51cf66;
}

/* Loading State */
.is-loading {
    pointer-events: none;
    opacity: 0.6;
}

/* Form Blocking Overlay */
.form-blocking-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.form-blocking-overlay.active {
    display: flex;
}

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--light-text);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* Posts styling */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 1rem;
    color: var(--light-text);
}

.post-card img {
    transition: transform .25s ease;
}

.post-card:hover img {
    transform: scale(1.03);
}

.badge.bg-primary-light {
    background: rgba(255,255,255,0.06);
    color: var(--light-text);
    border: 1px solid rgba(255,255,255,0.06);
}

.bg-gradient-secondary {
    background: linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.03));
}

.featured-section .glass-card {
    padding: 0;
}

.glass-input {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06);
    color: var(--light-text);
}

.badge {
    font-size: 0.8rem;
}

.btn-primary {
    background: #ffffff;
    color: #000000;
    border: none;
}

.btn-outline-primary {
    color: #ffffff;
    border-color: rgba(255,255,255,0.06);
}