/* ===== ROOT VARIABLES ===== */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-color);
    background-color: var(--light-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.main-content {
    padding-top: 80px;
    min-height: calc(100vh - 200px);
}

/* ===== NAVBAR ===== */
.navbar-custom {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    padding: 1rem 0;
}

    .navbar-custom.scrolled {
        padding: 0.5rem 0;
        box-shadow: var(--shadow-lg);
    }

.brand-custom {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

    .brand-custom:hover {
        color: var(--primary-dark) !important;
        transform: scale(1.05);
    }

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

.nav-link-custom {
    color: var(--gray-700) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

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

    .nav-link-custom:hover {
        color: var(--primary-color) !important;
        background-color: var(--gray-100);
    }

        .nav-link-custom:hover::after {
            width: 80%;
        }

.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

    .navbar-toggler:focus {
        box-shadow: none;
    }

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%236366f1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== BUTTONS ===== */
.btn-custom-primary {
    background: var(--gradient-primary);
    color: white !important;
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

    .btn-custom-primary:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.btn-hero-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    display: inline-flex;
    align-items: center;
}

    .btn-hero-primary:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-xl);
        color: white;
    }

.btn-hero-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

    .btn-hero-secondary:hover {
        background: var(--primary-color);
        color: white;
        transform: translateY(-3px);
    }

/* ===== HERO SECTION ===== */
.hero-section {
    padding: 6rem 0 4rem;
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    position: relative;
    overflow: hidden;
}

    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 600px;
        height: 600px;
        background: var(--gradient-primary);
        border-radius: 50%;
        opacity: 0.1;
        filter: blur(100px);
    }

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--gray-900);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* ===== FEATURES SECTION ===== */
.features-section {
    padding: 5rem 0;
    background-color: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-700);
    max-width: 600px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    height: 100%;
    border: 1px solid var(--gray-200);
}

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-xl);
        border-color: var(--primary-color);
    }

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: white;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.feature-description {
    color: var(--gray-700);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

    .feature-link:hover {
        color: var(--primary-dark);
        gap: 0.5rem;
    }

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 5rem 0;
    background: var(--gradient-primary);
}

.cta-card {
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn-cta {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    display: inline-flex;
    align-items: center;
}

    .btn-cta:hover {
        transform: translateY(-3px) scale(1.05);
        box-shadow: var(--shadow-xl);
        color: var(--primary-color);
    }

/* ===== FOOTER ===== */
.footer-custom {
    background-color: var(--gray-900);
    color: var(--gray-300);
    margin-top: auto;
}

.footer-link {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

    .footer-link:hover {
        color: white;
    }

/* ===== DROPDOWN ===== */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.dropdown-item {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

    .dropdown-item:hover {
        background-color: var(--gray-100);
        color: var(--primary-color);
    }

.dropdown-divider {
    margin: 0.5rem 0;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet (768px - 991px) */
@media (max-width: 991px) {
    .navbar-collapse {
        background: white;
        padding: 1rem;
        border-radius: 12px;
        margin-top: 1rem;
        box-shadow: var(--shadow-lg);
    }

    .nav-link-custom {
        margin: 0.25rem 0;
    }

    .btn-custom-primary {
        width: 100%;
        margin-top: 0.5rem;
        justify-content: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2rem;
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    .main-content {
        padding-top: 70px;
    }

    .navbar-custom {
        padding: 0.75rem 0;
    }

    .brand-custom {
        font-size: 1.25rem;
    }

    .hero-section {
        padding: 3rem 0 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .floating-card {
        padding: 2rem;
        margin-top: 2rem;
    }

    .features-section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
    }

    .cta-section {
        padding: 3rem 0;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-subtitle {
        font-size: 1rem;
    }

    .btn-cta {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .footer-custom {
        text-align: center;
    }

        .footer-custom .col-md-6 {
            text-align: center !important;
        }
}

/* Small Mobile (up to 575px) */
@media (max-width: 575px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: 1.25rem;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ===== UTILITIES ===== */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-secondary {
    background: var(--gradient-secondary);
}

.bg-gradient-accent {
    background: var(--gradient-accent);
}

/* ===== SCROLL BEHAVIOR ===== */
html {
    scroll-behavior: smooth;
}

/* ===== SELECTION ===== */
::selection {
    background-color: var(--primary-color);
    color: white;
}

::-moz-selection {
    background-color: var(--primary-color);
    color: white;
}