/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    --color-bg-card-hover: rgba(255, 255, 255, 0.06);

    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #606070;

    --color-accent-primary: #6366f1;
    --color-accent-secondary: #8b5cf6;
    --color-accent-tertiary: #ec4899;

    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-budget: #22c55e;
    --color-standard: #3b82f6;
    --color-premium: #f59e0b;

    --gradient-primary: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary), var(--color-accent-tertiary));
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.05));

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: 20px;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===========================
   Container & Layout
   =========================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* ===========================
   Header
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

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

.nav {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-base);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-reset {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-reset:hover {
    background: var(--glass-bg);
    color: var(--color-text-primary);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

/* ===========================
   Main Layout
   =========================== */
.main {
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.main-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-2xl);
}

/* ===========================
   Filters Sidebar
   =========================== */
.filters-sidebar {
    position: sticky;
    top: 96px;
    height: fit-content;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.filters-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.filter-group {
    margin-bottom: var(--spacing-lg);
}

.filter-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.filter-select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-base);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a0a0b0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.filter-select:hover {
    border-color: var(--color-accent-primary);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.pricing-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.pricing-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.pricing-option:hover {
    border-color: var(--color-accent-primary);
}

.pricing-option input {
    accent-color: var(--color-accent-primary);
}

.pricing-option input:checked+.pricing-label {
    color: var(--color-text-primary);
}

.pricing-label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.pricing-label.budget {
    color: var(--color-budget);
}

.pricing-label.standard {
    color: var(--color-standard);
}

.pricing-label.premium {
    color: var(--color-premium);
}

.filter-results {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.filter-results span {
    font-weight: 700;
    color: var(--color-accent-primary);
}

/* ===========================
   Call Centers Section
   =========================== */
.call-centers-section {
    min-height: 500px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.call-centers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* ===========================
   Call Center Card
   =========================== */
.call-center-card {
    background: var(--gradient-card);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.call-center-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.call-center-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-lg);
}

.call-center-card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-logo {
    width: 56px;
    height: 56px;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}

.card-title-group {
    flex: 1;
    min-width: 0;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-country {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.card-description {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.tag.service {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-accent-primary);
}

.tag.language {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-accent-secondary);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.card-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.rating-star {
    color: var(--color-warning);
}

.rating-value {
    font-weight: 600;
}

.rating-count {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.card-pricing {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.pricing-tier {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.pricing-tier.budget {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-budget);
}

.pricing-tier.standard {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-standard);
}

.pricing-tier.premium {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-premium);
}

.price-range {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* ===========================
   No Results & Loading
   =========================== */
.no-results {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-secondary);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-tagline {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-md);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-3xl);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.footer-column a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 260px 1fr;
    }

    .nav {
        display: none;
    }
}

@media (max-width: 768px) {
    .main-layout {
        grid-template-columns: 1fr;
    }

    .filters-sidebar {
        position: static;
        order: -1;
    }

    .hero-stats {
        gap: var(--spacing-xl);
    }

    .stat-value {
        font-size: 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-2xl);
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }

    .call-centers-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: 120px 0 60px;
    }

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

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

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
}