/* ==========================================================================
   99COMLABS Support & Engineering Helpdesk Design System
   ========================================================================== */

:root {
    --bg-void: #050505;
    --bg-surface: #0a0a0c;
    --bg-card: rgba(18, 18, 22, 0.75);
    --bg-card-hover: rgba(26, 26, 32, 0.9);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-hover: rgba(255, 255, 255, 0.22);
    
    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;
    --text-dim: #71717a;
    --text-white: #ffffff;

    --accent-emerald: #22c55e;
    --accent-blue: #38bdf8;
    
    --font-heading: 'Space Grotesk', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-code: 'Fira Code', monospace;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-void);
    color: var(--text-main);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--text-white);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

p { color: var(--text-muted); }
a { color: inherit; text-decoration: none; }
code, .code-font { font-family: var(--font-code); font-size: 0.9em; }

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-white { color: var(--text-white) !important; }
.text-center { text-align: center; }
.text-gradient {
    background: linear-gradient(135deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Glowing Ambient Lighting */
.glow-sphere {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.2;
}

.sphere-1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, rgba(0,0,0,0) 70%);
    top: -100px; left: -100px;
}

.sphere-2 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(0,0,0,0) 70%);
    bottom: -150px; right: -150px;
}

/* Glass Panels */
.glass-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--transition-smooth);
}

/* Header Navigation */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 18px 0;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(5, 5, 5, 0.75);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-white);
}

.brand-dot { color: #a1a1aa; }

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.main-nav a {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* Hero Section */
.support-hero {
    position: relative;
    padding: 150px 0 40px;
    z-index: 1;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    font-weight: 700;
    max-width: 850px;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 1.15rem;
    max-width: 650px;
    line-height: 1.7;
}

/* Domains Section */
.domains-section {
    padding: 50px 0 70px;
    position: relative;
    z-index: 1;
}

.section-header {
    margin-bottom: 40px;
}

.section-tag {
    font-family: var(--font-code);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    margin-bottom: 10px;
    display: block;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.domain-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.domain-card {
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
}

.domain-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glass-hover);
    transform: translateY(-4px);
}

.domain-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.domain-icon {
    width: 46px; height: 46px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
}

.domain-badge {
    font-family: var(--font-code);
    font-size: 0.68rem;
    color: var(--text-dim);
    letter-spacing: 0.08em;
}

.domain-name {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.domain-desc {
    font-size: 0.88rem;
    line-height: 1.55;
    margin-bottom: 24px;
    flex-grow: 1;
}

.domain-action-btn {
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 0.88rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 0;
    transition: var(--transition-fast);
}

.domain-action-btn:hover {
    color: var(--accent-blue);
    transform: translateX(4px);
}

/* Ticket Submission Section */
.ticket-section {
    padding: 60px 0 90px;
    position: relative;
    z-index: 1;
}

.ticket-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 40px;
    align-items: flex-start;
}

.ticket-heading {
    font-size: clamp(2rem, 3.2vw, 2.5rem);
    margin-bottom: 14px;
}

.ticket-subtext {
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 30px;
}

.escalation-box {
    padding: 28px 24px;
}

.escalation-box h4 {
    font-size: 1rem;
    margin-bottom: 18px;
}

.escalation-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.esc-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.esc-link:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-glass-hover);
    transform: translateY(-2px);
}

.esc-title {
    display: block;
    font-family: var(--font-code);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-white);
}

.esc-sub {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Support Form Card */
.ticket-form-card {
    padding: 36px 32px;
}

.support-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-white);
}

.form-group label .required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 13px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-white);
    font-family: var(--font-body);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.06);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 38px;
    cursor: pointer;
}

.form-group select option {
    background-color: #121216;
    color: #f4f4f5;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
}

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

.btn-primary:hover {
    background: #e4e4e7;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-white);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--border-glass-hover);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: rgba(37, 211, 102, 0.15);
    border: 1px solid rgba(37, 211, 102, 0.3);
    color: #25d366;
}

.btn-whatsapp:hover {
    background: #25d366;
    color: #050505;
    transform: translateY(-2px);
}

.btn-full { width: 100%; }

.spinner-svg {
    animation: rotate 1s linear infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

/* FAQ Section */
.kb-section {
    padding: 70px 0 110px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-glass);
}

.kb-filters {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
}

.filter-chip {
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-chip:hover {
    color: var(--text-white);
    border-color: var(--border-glass-hover);
}

.filter-chip.active {
    background: var(--text-white);
    color: var(--bg-void);
    border-color: var(--text-white);
    font-weight: 600;
}

.kb-accordion-grid {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.kb-item {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.kb-trigger {
    width: 100%;
    padding: 20px 24px;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
    cursor: pointer;
    color: var(--text-white);
    font-family: var(--font-heading);
    font-size: 1.02rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.kb-trigger:hover {
    background: rgba(255, 255, 255, 0.02);
}

.kb-question {
    flex-grow: 1;
    line-height: 1.4;
}

.kb-arrow {
    font-size: 1.1rem;
    color: var(--text-dim);
    transition: transform var(--transition-fast);
}

.kb-item.active .kb-arrow {
    transform: rotate(180deg);
}

.kb-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease-out;
    padding: 0 24px;
}

.kb-item.active .kb-content {
    max-height: 350px;
    padding: 0 24px 22px 24px;
}

.kb-content p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 14px;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    width: 100%;
    max-width: 500px;
    padding: 36px 32px;
    transform: scale(0.95);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-card {
    transform: scale(1);
}

.modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.success-icon-badge {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}

.modal-header h3 {
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.modal-header p {
    font-size: 0.9rem;
}

.ticket-summary-box {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
}

.summary-label {
    color: var(--text-dim);
    font-family: var(--font-code);
    font-size: 0.75rem;
}

.summary-val {
    font-weight: 600;
    color: var(--text-white);
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

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

.btn-text-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.88rem;
    cursor: pointer;
    padding: 6px;
    transition: var(--transition-fast);
}

.btn-text-close:hover {
    color: var(--text-white);
}

/* Site Footer */
.site-footer {
    padding: 36px 0;
    border-top: 1px solid var(--border-glass);
    background: var(--bg-void);
    position: relative;
    z-index: 1;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--text-white);
}

/* Floating iOS-style Back to Top Button */
.scroll-top-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(18, 18, 22, 0.82);
    border: 1px solid var(--border-glass-hover);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s ease, border-color 0.2s ease;
    z-index: 99;
}

.scroll-top-btn.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background: rgba(30, 30, 38, 0.95);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-3px);
}

.scroll-top-btn:active {
    transform: scale(0.92);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .domain-cards-grid { grid-template-columns: repeat(2, 1fr); }
    .ticket-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .support-hero { padding: 120px 0 30px; }
    .domain-cards-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .main-nav { display: flex; gap: 16px; }
    .footer-container { flex-direction: column; gap: 18px; text-align: center; }
    .footer-brand { flex-direction: column; gap: 6px; }
    .footer-links { flex-direction: column; gap: 10px; }
    .scroll-top-btn { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}