/* Reset & Base */
@import 'variables.css';

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

html {
    scroll-behavior: smooth;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-main);
}

h1 {
    font-size: var(--font-size-h1);
    background: linear-gradient(to right, var(--gradient-text-start), var(--gradient-text-end));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text {
    font-weight: 800;
    background: linear-gradient(135deg, rgb(var(--color-primary-rgb)) 0%, rgb(var(--color-success-rgb)) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

h2 {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-xl) 0;
}

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

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

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: rgb(var(--color-primary-rgb));
    color: #ffffff !important;
    /* Force white text for contrast */
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background-color: rgba(var(--color-primary-rgb), 0.9);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(var(--color-primary-rgb), 0.6);
}

.btn-secondary {
    background-color: var(--bg-btn-secondary);
    color: var(--text-main);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    /* Effectively doubles opacity */
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    backdrop-filter: blur(12px);
    transition: transform var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(var(--color-primary-rgb), 0.5);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-full);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--text-main);
    background-color: var(--bg-btn-secondary);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-mobile-menu);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--text-main);
        cursor: pointer;
        padding: 0.5rem;
    }
}

@media (min-width: 769px) {
    .mobile-menu-btn {
        display: none;
    }
}