/**
 * S666 Theme Styles
 * 
 * @package S666_Theme
 */

/* ================================
   CSS Variables
   ================================ */
:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #f39c12;
    --color-accent-hover: #e67e22;
    --color-text: #ffffff;
    --color-text-muted: #cccccc;
    --color-bg-dark: #0f0f1a;
    --color-bg-light: #1e1e3f;
    --color-border: #2a2a4a;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ================================
   Layout
   ================================ */
.site {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-content {
    flex: 1;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

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

.bg-gradient {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
}

/* ================================
   Header
   ================================ */
.site-header {
    background-color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* Navigation Desktop */
.nav-desktop {
    flex: 1;
}

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

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    position: relative;
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    top: 8px;
}

/* Mobile Navigation */
.nav-mobile {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md);
}

.nav-mobile.active {
    display: block;
}

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

.mobile-nav-menu a {
    color: var(--color-text);
    font-size: 1.1rem;
    padding: var(--spacing-xs) 0;
    display: block;
}

.mobile-actions {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-primary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-text);
}

.btn-outline:hover {
    background-color: var(--color-text);
    color: var(--color-primary);
}

.btn-login {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-text);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-login:hover {
    background-color: var(--color-text);
    color: var(--color-primary);
}

.btn-register {
    background-color: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-register:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ================================
   Hero Section
   ================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: 70px;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Page Hero */
.page-hero {
    padding: calc(var(--spacing-xl) + 70px) var(--spacing-md) var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
}

.page-hero h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-hero .hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* ================================
   Section Headers
   ================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

/* ================================
   Content Sections
   ================================ */
.section-content {
    max-width: 800px;
    margin: 0 auto;
}

.section-content h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.section-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

/* ================================
   Feature Cards
   ================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    background-color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ================================
   Service Items
   ================================ */
.services-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.service-item {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-accent);
}

.service-item h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.service-item p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.service-item p:last-child {
    margin-bottom: 0;
}

/* ================================
   CTA Section
   ================================ */
.cta-section {
    text-align: center;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ================================
   FAQ Section
   ================================ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.faq-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.faq-answer p {
    color: var(--color-text-muted);
}

/* ================================
   Guide Sections
   ================================ */
.guide-content {
    max-width: 900px;
    margin: 0 auto;
}

.guide-content h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.guide-content > p {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.step-item {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-accent);
}

.step-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.step-item p {
    color: var(--color-text-muted);
}

.guide-notes {
    background-color: var(--color-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
}

.guide-notes h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.guide-notes ul {
    list-style: disc;
    padding-left: var(--spacing-md);
    color: var(--color-text-muted);
}

.guide-notes li {
    margin-bottom: var(--spacing-xs);
}

.guide-item,
.device-card,
.benefit-card,
.promo-card,
.vip-card,
.category-item,
.requirement-item,
.response-item,
.tip-item,
.problem-item,
.term-item {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.guide-item h3,
.device-card h3,
.benefit-card h3,
.promo-card h3,
.vip-card h3,
.category-item h3,
.requirement-item h3,
.response-item h3,
.tip-item h3,
.problem-item h3,
.term-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.guide-item p,
.device-card p,
.benefit-card p,
.promo-card p,
.vip-card p,
.category-item p,
.requirement-item p,
.response-item p,
.tip-item p,
.problem-item p,
.term-item p {
    color: var(--color-text-muted);
}

/* ================================
   Grid Layouts
   ================================ */
.device-grid,
.benefits-grid,
.channels-grid,
.promo-grid,
.vip-levels,
.support-categories,
.requirement-list,
.response-times,
.tips-list,
.problem-list,
.terms-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

/* ================================
   Promo Cards
   ================================ */
.promo-card {
    text-align: center;
}

.promo-card.highlight {
    border: 2px solid var(--color-accent);
    position: relative;
}

.promo-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin: var(--spacing-xs) 0;
}

.promo-note {
    font-size: 0.9rem;
    font-style: italic;
    margin-top: var(--spacing-xs);
}

.promo-terms {
    list-style: disc;
    text-align: left;
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ================================
   Channel Cards
   ================================ */
.channel-card {
    text-align: center;
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.channel-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-sm);
    background-color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.channel-time {
    color: var(--color-accent);
    font-weight: 600;
    margin-top: var(--spacing-xs);
}

/* ================================
   Support List
   ================================ */
.support-list {
    list-style: none;
}

.support-list li {
    margin-bottom: var(--spacing-xs);
}

.support-list a {
    color: var(--color-text-muted);
}

.support-list a:hover {
    color: var(--color-accent);
}

/* ================================
   Response Speed
   ================================ */
.response-speed {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.1rem;
    margin: var(--spacing-xs) 0;
}

/* ================================
   Footer
   ================================ */
.site-footer {
    background-color: var(--color-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.footer-section p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-nav-menu {
    list-style: none;
}

.footer-nav-menu li {
    margin-bottom: var(--spacing-xs);
}

.footer-nav-menu a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-nav-menu a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-copyright {
    margin-bottom: var(--spacing-xs);
}

.footer-copyright p {
    color: var(--color-text);
    font-size: 0.9rem;
}

.footer-legal {
    margin-bottom: var(--spacing-sm);
}

.footer-legal p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-seo {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
}

.footer-seo p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    line-height: 1.7;
    text-align: center;
}

/* ================================
   Page Content
   ================================ */
.page-content {
    padding: calc(var(--spacing-lg) + 70px) 0 var(--spacing-lg);
}

.entry-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.entry-title {
    font-size: 2rem;
    font-weight: 700;
}

.entry-content {
    max-width: 800px;
    margin: 0 auto;
}

/* ================================
   Responsive Styles
   ================================ */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav-desktop {
        display: none;
    }

    .header-actions {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

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

    .page-hero h1 {
        font-size: 1.5rem;
    }

    .section-header h2,
    .cta-content h2 {
        font-size: 1.5rem;
    }

    .features-grid,
    .device-grid,
    .benefits-grid,
    .channels-grid,
    .promo-grid,
    .vip-levels,
    .support-categories,
    .requirement-list,
    .response-times,
    .tips-list,
    .problem-list,
    .terms-list {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

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

    .btn {
        width: 100%;
    }
}

/* ================================
   Accessibility
   ================================ */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background-color: var(--color-bg-light);
    clip: auto !important;
    clip-path: none;
    color: var(--color-text);
    display: block;
    font-size: 1rem;
    height: auto;
    left: 5px;
    padding: 15px 23px 14px;
    top: 5px;
    width: auto;
    z-index: 100000;
}

/* ================================
   Image Styles
   ================================ */
.brand-image,
.features-image,
.services-image,
.cta-image,
.faq-image,
.faq-bottom-image,
.guide-image,
.guide-bottom-image,
.troubleshoot-image,
.promo-image,
.guide-intro-image,
.contact-image {
    margin: var(--spacing-md) 0;
    text-align: center;
}

.brand-image img,
.features-image img,
.services-image img,
.cta-image img,
.faq-image img,
.faq-bottom-image img,
.guide-image img,
.guide-bottom-image img,
.troubleshoot-image img,
.promo-image img,
.guide-intro-image img,
.contact-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.cta-image img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

/* ================================
   Print Styles
   ================================ */
@media print {
    .site-header,
    .site-footer,
    .hero-buttons,
    .cta-buttons {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}