/* ===== GLOBAL STYLES ===== */
:root {
    --primary-color: #4f46e5;
    --secondary-color: #6c757d;
    --dark-bg: rgba(10, 25, 47, 0.95);
    --text-light: #ffffff;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', 'Lato', 'Arial', sans-serif, system-ui;
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--dark-bg);
    color: var(--text-light);
    margin: 0;
    padding: 0;
}

/* ===== NAVIGATION ===== */
.navbar {
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    padding: 1rem 0;
}

.navbar-brand img {
    transition: var(--transition);
}

.navbar-nav .nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

/* ===== DROPDOWN MENUS ===== */
.dropdown-menu {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin-top: 0.5rem;
    padding: 0.5rem 0;
    min-width: 200px;
}

.dropdown-item {
    color: var(--text-light) !important;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: rgba(79, 70, 229, 0.1);
    color: var(--primary-color) !important;
}

/* Remove dropdown caret */
.dropdown-toggle::after {
    display: none;
}

/* ===== HERO SECTIONS ===== */
.hero-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(10, 25, 47, 0.9));
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../imgs/hero-buble.png') no-repeat center center;
    background-size: cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--text-light), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-section .lead {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* ===== MAIN CONTENT ===== */
main {
    padding-top: 80px;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== CARDS ===== */
.card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    height: 100%;
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.2);
    border-color: var(--primary-color);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, var(--primary-color), #3730a3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.card-text {
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== BLOG STYLES ===== */
.blog-post {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.blog-post-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.blog-post-meta {
    font-size: 0.9rem;
}

.blog-post-content {
    font-size: 1.1rem;
    line-height: 1.8;
}

.blog-post-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: var(--text-light);
}

.blog-post-content p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.blog-post-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.blog-post-content li {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

/* ===== BUTTONS ===== */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #3730a3);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #3730a3, var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 0;
    }
    
    .hero-section {
        text-align: center;
        padding: 2rem 0;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .card {
        margin-bottom: 2rem;
    }
    
    .blog-post {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 14px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .blog-post {
        padding: 1rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-primary {
    color: var(--primary-color) !important;
}

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

/* Override Bootstrap primary color */
.btn-primary {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: #3730a3 !important;
    border-color: #3730a3 !important;
}

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

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

.border-top {
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
}

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

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3730a3;
}