:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-color: #0f172a;
    --dark-secondary: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --text-muted: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
    background: #ffffff;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Navbar - Modern Glassmorphism */
.navbar {
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    padding: 1.2rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.8rem 0;
    box-shadow: 0 10px 40px 0 rgba(31, 38, 135, 0.15);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.6rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-brand i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.navbar-nav .nav-link {
    font-weight: 500;
    color: var(--text-color) !important;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    white-space: nowrap;
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(99, 102, 241, 0.05);
}

.navbar-nav .nav-link:hover::before {
    width: 60%;
}

.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    background: rgba(99, 102, 241, 0.1);
}

.navbar-nav .nav-link.active::before {
    width: 60%;
}

/* Modern Buttons */
.btn {
    font-weight: 600;
    border-radius: 12px;
    padding: 0.7rem 1.8rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
    color: white !important;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color) !important;
    color: var(--primary-color) !important;
    background: transparent !important;
}

.btn-outline-primary:hover {
    background: var(--primary-color) !important;
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    border-radius: 14px;
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    border-radius: 10px;
}

/* Footer - Modern Dark Design */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--dark-secondary) 100%);
    color: white;
    padding: 5rem 0 2rem;
    margin-top: 8rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.5), transparent);
}

.footer h5 {
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer a:hover {
    color: white;
    transform: translateX(5px);
}

.social-links a {
    display: inline-block;
    width: 45px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    margin-right: 0.8rem;
    margin-bottom: 0.8rem;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transform: translateY(-5px) rotate(5deg);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Navbar Auth Buttons */
.navbar-auth-buttons {
    flex-shrink: 0;
}

.navbar-auth-buttons .btn {
    white-space: nowrap;
}

/* Desktop Navbar */
@media (min-width: 992px) {
    .navbar-nav {
        display: flex;
        align-items: center;
        flex-wrap: nowrap;
    }
    
    .navbar-nav .nav-item {
        flex-shrink: 0;
    }

    .navbar-nav .nav-link {
        margin: 0 0.5rem;
    }

    .navbar-auth-buttons {
        margin-left: 1.5rem;
    }

    .navbar-auth-buttons .btn {
        min-width: 110px;
    }
}

/* Mobile & Tablet Navbar */
@media (max-width: 991px) {
    .navbar-brand {
        font-size: 1.4rem;
    }

    .navbar-nav {
        padding-top: 1rem;
        align-items: stretch;
        width: 100%;
    }

    .navbar-nav .nav-item {
        width: 100%;
    }

    .navbar-nav .nav-link {
        margin: 0.3rem 0;
        padding: 0.75rem 1rem !important;
    }

    .navbar-auth-buttons {
        width: 100%;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
        flex-direction: column;
    }

    .navbar-auth-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .btn-lg {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }

    .footer {
        margin-top: 4rem;
        padding: 3rem 0 1.5rem;
    }
}