/* Main Styles - Mobile First */

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--color-primary);
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Mobile Navigation */
.nav-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-bg-secondary);
    transition: left var(--transition-base);
    padding: var(--spacing-lg) var(--spacing-md);
    border-right: 1px solid var(--color-border);
}

.nav.active {
    left: 0;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    display: block;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

/* Language Selector */
.lang-selector {
    display: flex;
    gap: 2px;
    margin-top: var(--spacing-lg);
    background-color: rgba(42, 42, 42, 0.5);
    padding: 4px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.lang-selector button {
    background-color: transparent;
    border: none;
    color: var(--color-text-muted);
    padding: 6px 14px;
    border-radius: 16px;
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-base);
    position: relative;
}

.lang-selector button:hover {
    color: var(--color-text-secondary);
    background-color: rgba(212, 175, 55, 0.1);
}

.lang-selector button.active {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
    box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

.lang-selector button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
}

/* Main Content */
main {
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Sections */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    margin-top: calc(var(--spacing-sm) * -1);
    margin-bottom: var(--spacing-xl);
}

/* Cards */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: 1fr;
}

.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: var(--font-size-base);
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-bg-primary);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-weight: 600;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-link {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-link:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Tablet (768px and up) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-xl);
    }

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

    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }

    .nav-toggle {
        display: none;
    }

    /* Desktop navigation - reordered for left alignment */
    .header .container {
        flex-direction: row;
        position: relative;
    }

    .nav {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background-color: transparent;
        padding: 0;
        border: none;
        order: -1; /* Place nav before logo */
        flex: 1;
        display: flex;
        align-items: center;
    }

    .logo {
        order: 0;
        position: absolute;
        right: 200px; /* More space for language selector */
        top: 50%;
        transform: translateY(-50%);
    }

    .nav-list {
        flex-direction: row;
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: var(--font-size-base);
        color: var(--color-text-secondary);
    }

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

    .lang-selector {
        margin-top: 0;
        margin-left: 0;
        background-color: rgba(26, 26, 26, 0.8);
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
    }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .section {
        padding: var(--spacing-2xl) 0 var(--spacing-2xl);
    }
}