/* ============================================================
   EventTitans Design System v2.0
   Premium event management platform - Atlanta, GA
   ============================================================ */

/* ---- CSS Custom Properties (Design Tokens) ---- */
:root {
    /* Brand Colors */
    --et-primary: #1a1a5e;
    --et-primary-light: #2d2d8a;
    --et-primary-dark: #0f0f3d;
    --et-accent: #ff6b35;
    --et-accent-light: #ff8a5c;
    --et-accent-dark: #e55a28;
    --et-accent-gradient: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --et-primary-gradient: linear-gradient(135deg, #1a1a5e 0%, #2d2d8a 100%);
    --et-surface: #ffffff;
    --et-surface-alt: #f8f9fc;
    --et-surface-dark: #111827;
    --et-text: #1f2937;
    --et-text-muted: #6b7280;
    --et-text-light: #9ca3af;
    --et-border: #e5e7eb;
    --et-border-light: #f3f4f6;

    /* Typography */
    --et-font-display: 'DM Serif Display', Georgia, serif;
    --et-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --et-font-mono: 'DM Mono', 'Roboto Mono', monospace;

    /* Font Sizes (fluid) */
    --et-text-xs: 0.75rem;
    --et-text-sm: 0.875rem;
    --et-text-base: 1rem;
    --et-text-lg: 1.125rem;
    --et-text-xl: 1.25rem;
    --et-text-2xl: 1.5rem;
    --et-text-3xl: clamp(1.75rem, 2.5vw, 2rem);
    --et-text-4xl: clamp(2rem, 3vw, 2.5rem);
    --et-text-5xl: clamp(2.5rem, 4vw, 3.5rem);
    --et-text-6xl: clamp(3rem, 5vw, 4.5rem);

    /* Spacing */
    --et-space-1: 0.25rem;
    --et-space-2: 0.5rem;
    --et-space-3: 0.75rem;
    --et-space-4: 1rem;
    --et-space-5: 1.25rem;
    --et-space-6: 1.5rem;
    --et-space-8: 2rem;
    --et-space-10: 2.5rem;
    --et-space-12: 3rem;
    --et-space-16: 4rem;
    --et-space-20: 5rem;
    --et-space-24: 6rem;

    /* Shadows */
    --et-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --et-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --et-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --et-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --et-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --et-shadow-card-hover: 0 20px 40px rgba(26, 26, 94, 0.12);

    /* Border Radius */
    --et-radius-sm: 0.375rem;
    --et-radius: 0.5rem;
    --et-radius-md: 0.75rem;
    --et-radius-lg: 1rem;
    --et-radius-xl: 1.5rem;
    --et-radius-full: 9999px;

    /* Transitions */
    --et-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --et-transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --et-transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --et-transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-index scale */
    --et-z-dropdown: 100;
    --et-z-sticky: 200;
    --et-z-overlay: 300;
    --et-z-modal: 400;
    --et-z-toast: 500;
}


/* ---- Skip to Content (Accessibility) ---- */
.et-skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    padding: 0.75rem 1.5rem;
    background: var(--et-primary);
    color: #fff;
    font-family: var(--et-font-body);
    font-weight: 600;
    font-size: var(--et-text-sm);
    border-radius: 0 0 var(--et-radius) var(--et-radius);
    text-decoration: none;
    transition: top var(--et-transition-fast);
}

.et-skip-link:focus {
    top: 0;
    color: #fff;
    outline: 3px solid var(--et-accent);
    outline-offset: 2px;
}


/* ---- Typography ---- */
.et-heading {
    font-family: var(--et-font-display);
    color: var(--et-primary);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.et-heading-xl {
    font-size: var(--et-text-5xl);
}

.et-heading-lg {
    font-size: var(--et-text-4xl);
}

.et-heading-md {
    font-size: var(--et-text-3xl);
}

.et-heading-sm {
    font-size: var(--et-text-2xl);
}

.et-body {
    font-family: var(--et-font-body);
    color: var(--et-text);
    line-height: 1.7;
}

.et-body-muted {
    color: var(--et-text-muted);
}

.et-label {
    font-family: var(--et-font-body);
    font-size: var(--et-text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--et-accent);
}


/* ---- Button Components ---- */
.et-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-family: var(--et-font-body);
    font-size: var(--et-text-sm);
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--et-radius-full);
    cursor: pointer;
    transition: all var(--et-transition);
    min-height: 44px;
    white-space: nowrap;
}

.et-btn:hover {
    transform: translateY(-1px);
}

.et-btn:active {
    transform: translateY(0);
}

.et-btn-primary {
    background: var(--et-accent-gradient);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
}

.et-btn-primary:hover {
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
    color: #fff;
}

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

.et-btn-secondary:hover {
    background: var(--et-primary);
    color: #fff;
}

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

.et-btn-ghost:hover {
    background: var(--et-surface-alt);
    color: var(--et-primary);
}

.et-btn-white {
    background: #fff;
    color: var(--et-primary);
    box-shadow: var(--et-shadow);
}

.et-btn-white:hover {
    box-shadow: var(--et-shadow-md);
    color: var(--et-accent);
}

.et-btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: var(--et-text-xs);
    min-height: 36px;
}

.et-btn-lg {
    padding: 1rem 2.25rem;
    font-size: var(--et-text-base);
    min-height: 52px;
}


/* ---- Card Components ---- */
.et-card {
    background: var(--et-surface);
    border-radius: var(--et-radius-lg);
    box-shadow: var(--et-shadow);
    overflow: hidden;
    transition: transform var(--et-transition), box-shadow var(--et-transition);
}

.et-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--et-shadow-card-hover);
}

.et-card-flat {
    box-shadow: none;
    border: 1px solid var(--et-border-light);
}

.et-card-flat:hover {
    border-color: var(--et-accent);
    box-shadow: var(--et-shadow-md);
}


/* ---- Section Styling ---- */
.et-section {
    padding: var(--et-space-16) 0;
}

.et-section-lg {
    padding: var(--et-space-24) 0;
}

.et-section-dark {
    background: var(--et-surface-dark);
    color: #fff;
}

.et-section-alt {
    background: var(--et-surface-alt);
}

.et-section-title {
    text-align: center;
    margin-bottom: var(--et-space-12);
}

.et-section-title .et-label {
    margin-bottom: var(--et-space-3);
    display: block;
}


/* ---- Announcement Bar ---- */
.et-announcement {
    background: var(--et-accent-gradient);
    color: #fff;
    padding: 0.5rem 1rem;
    font-family: var(--et-font-body);
    font-size: var(--et-text-sm);
    text-align: center;
    position: relative;
    z-index: 1000;
}

.et-announcement a {
    color: #fff;
    text-decoration: underline;
    font-weight: 600;
}

.et-announcement a:hover {
    opacity: 0.9;
}

.et-announcement-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    opacity: 0.7;
    font-size: 1.25rem;
}

.et-announcement-close:hover {
    opacity: 1;
}


/* ---- Navigation Enhancements ---- */
.et-nav-blur {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.95) !important;
}

.et-nav-scrolled {
    box-shadow: var(--et-shadow-md) !important;
}

.et-nav-link-animated {
    position: relative;
}

.et-nav-link-animated::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--et-accent);
    transition: all var(--et-transition);
    transform: translateX(-50%);
}

.et-nav-link-animated:hover::after,
.et-nav-link-animated.active::after {
    width: 100%;
}

.et-demo-btn {
    background: var(--et-accent-gradient);
    color: #fff !important;
    border-radius: var(--et-radius-full);
    padding: 0.5rem 1.25rem !important;
    font-weight: 600;
    font-size: var(--et-text-sm);
    transition: all var(--et-transition);
    border: none;
    white-space: nowrap;
    text-decoration: none;
}

.et-demo-btn:hover {
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
    transform: translateY(-1px);
    color: #fff;
}


/* ---- Mobile Menu Overlay ---- */
.et-mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--et-transition);
}

.et-mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.et-mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 380px;
    height: 100%;
    background: #fff;
    z-index: 999;
    overflow-y: auto;
    transition: right var(--et-transition-slow);
    box-shadow: var(--et-shadow-xl);
    padding: 1.5rem;
}

.et-mobile-menu.active {
    right: 0;
}

.et-mobile-menu .nav-link {
    padding: 0.875rem 0;
    font-size: var(--et-text-lg);
    border-bottom: 1px solid var(--et-border-light);
    min-height: 44px;
    display: flex;
    align-items: center;
}


/* ---- Scroll Reveal Animations ---- */
/*.et-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.et-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
*/
.et-reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.et-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.et-reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.et-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.et-reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.et-reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delay utilities */
.et-delay-1 { transition-delay: 0.1s; }
.et-delay-2 { transition-delay: 0.2s; }
.et-delay-3 { transition-delay: 0.3s; }
.et-delay-4 { transition-delay: 0.4s; }
.et-delay-5 { transition-delay: 0.5s; }


/* ---- Counter Animation ---- */
.et-counter {
    font-family: var(--et-font-mono);
    font-size: var(--et-text-4xl);
    font-weight: 700;
    color: var(--et-primary);
    line-height: 1;
    display: inline-block;
}

.et-counter-suffix {
    font-size: 0.6em;
    color: var(--et-accent);
    font-weight: 700;
}


/* ---- Sponsor Marquee ---- */
.et-marquee {
    overflow: hidden;
    position: relative;
    width: 100%;
}

.et-marquee-track {
    display: flex;
    width: max-content;
    animation: et-marquee-scroll 30s linear infinite;
    gap: 3rem;
    align-items: center;
}

.et-marquee:hover .et-marquee-track {
    animation-play-state: paused;
}

.et-marquee-item {
    flex-shrink: 0;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--et-transition);
}

.et-marquee-item:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@keyframes et-marquee-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}


/* ---- Footer ---- */
.et-footer {
    background: var(--et-surface-dark);
    color: rgba(255, 255, 255, 0.8);
    font-family: var(--et-font-body);
}

.et-footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--et-transition-fast);
}

.et-footer a:hover {
    color: var(--et-accent-light);
}

.et-footer-heading {
    font-family: var(--et-font-body);
    font-size: var(--et-text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #fff;
    margin-bottom: var(--et-space-4);
}

.et-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.et-footer-links li {
    margin-bottom: var(--et-space-2);
}

.et-footer-links a {
    font-size: var(--et-text-sm);
    padding: 0.125rem 0;
    display: inline-block;
}

.et-footer-social {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.et-footer-social a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--et-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--et-transition);
    font-size: 0.9rem;
}

.et-footer-social a:hover {
    background: var(--et-accent);
    border-color: var(--et-accent);
    color: #fff;
}

.et-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--et-space-6);
    margin-top: var(--et-space-8);
}

.et-trust-badges {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.et-trust-badges img {
    height: 40px;
    width: auto;
    border-radius: var(--et-radius-sm);
    background: #fff;
    padding: 4px 8px;
}


/* ---- Focus Visible (Accessibility) ---- */
*:focus-visible {
    outline: 3px solid var(--et-accent);
    outline-offset: 4px;
    border-radius: 2px;
}

/* Remove outline for mouse users */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Specific overrides for buttons and links */
.et-btn:focus-visible,
.nav-link:focus-visible,
a:focus-visible {
    outline: 3px solid var(--et-accent);
    outline-offset: 4px;
}


/* ---- Prefers Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .et-reveal,
    .et-reveal-left,
    .et-reveal-right,
    .et-reveal-scale {
        opacity: 1;
        transform: none;
    }

    .et-marquee-track {
        animation: none;
    }
}


/* ---- Gallery Enhancements ---- */
.et-gallery-item img {
    transition: transform var(--et-transition-slow);
}

.et-gallery-item:hover img {
    transform: scale(1.05);
}

.lightbox-container {
    background: rgba(0, 0, 0, 0.92);
}


/* ---- Stats Section ---- */
.et-stats {
    position: relative;
}

.et-stats .count-area-content {
    transition: transform var(--et-transition), box-shadow var(--et-transition);
}

.et-stats .count-area-content:hover {
    transform: translateY(-4px);
    box-shadow: var(--et-shadow-card-hover);
}


/* ============================================================
   Responsive Breakpoints (Mobile-First)
   ============================================================ */

/* Base (mobile < 576px) */
.et-section {
    padding: var(--et-space-10) 0;
}

.et-section-lg {
    padding: var(--et-space-12) 0;
}

/* Small (>= 576px) */
@media (min-width: 576px) {
    .et-section {
        padding: var(--et-space-12) 0;
    }
}

/* Medium / Tablet (>= 768px) */
@media (min-width: 768px) {
    .et-section {
        padding: var(--et-space-16) 0;
    }

    .et-section-lg {
        padding: var(--et-space-20) 0;
    }
}

/* Large / Desktop (>= 992px) */
@media (min-width: 992px) {
    .et-mobile-menu-overlay,
    .et-mobile-menu {
        display: none !important;
    }
}

/* Extra Large (>= 1200px) */
@media (min-width: 1200px) {
    .et-section {
        padding: var(--et-space-16) 0;
    }

    .et-section-lg {
        padding: var(--et-space-24) 0;
    }
}

/* Mobile-specific overrides (< 768px) */
@media (max-width: 767.98px) {
    .et-btn {
        width: 100%;
        justify-content: center;
    }

    .et-btn-inline {
        width: auto;
    }

    .et-footer .row > [class*="col-"] {
        margin-bottom: var(--et-space-8);
    }

    .et-trust-badges {
        justify-content: center;
    }

    .et-trust-badges img {
        height: 32px;
    }

    .et-announcement {
        font-size: var(--et-text-xs);
        padding: 0.375rem 2.5rem 0.375rem 0.75rem;
    }

    /* Ensure minimum tap targets (44px) */
    .nav-link,
    .dropdown-item,
    .et-footer-links a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* Tablet-specific (768px - 991px) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .et-footer .row {
        row-gap: var(--et-space-6);
    }
}