/* ================================================
   Chrono — Dark Mode Proxy Browser
   ================================================ */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

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

:root {
    --bg-primary: #07070d;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(15, 15, 25, 0.72);
    --border-subtle: rgba(255, 255, 255, 0.07);
    --border-focus: rgba(120, 90, 255, 0.5);
    --text-primary: #eaeaef;
    --text-secondary: rgba(234, 234, 239, 0.45);
    --accent: #7c5cfc;
    --accent-glow: rgba(124, 92, 252, 0.25);
    --accent-alt: #5eead4;
    --danger: #ff4466;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-pill: 50px;
    --transition-fast: 0.18s ease;
    --transition-med: 0.35s ease;
    --nav-height: 52px;
}

html, body {
    height: 100%;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

/* ---------- Particle Canvas ---------- */
#particle-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* ---------- Landing Page ---------- */
.landing {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    opacity: 1;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.landing.fade-out {
    opacity: 0;
    transform: scale(0.96);
    pointer-events: none;
}

.landing-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    animation: fadeInUp 0.8s ease both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Logo */
.logo-glow {
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -65%);
}

.brand {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -2px;
    background: linear-gradient(135deg, #fff 0%, var(--accent) 60%, var(--accent-alt) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.brand-icon {
    font-size: 44px;
    margin-right: 4px;
    vertical-align: middle;
}

.tagline {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 0.5px;
    margin-bottom: 28px;
}

/* ---------- Search Bar (Landing) ---------- */
.search-form {
    width: 100%;
    max-width: 580px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.search-bar-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 18px;
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
    pointer-events: none;
    transition: color var(--transition-fast);
}

#sj-address {
    width: 100%;
    height: 54px;
    padding: 0 56px 0 48px;
    font-family: inherit;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    outline: none;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

#sj-address::placeholder {
    color: var(--text-secondary);
}

#sj-address:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 8px 32px rgba(0,0,0,0.4);
    background: rgba(255, 255, 255, 0.05);
}

#sj-address:focus ~ .search-icon,
.search-bar-wrapper:hover .search-icon {
    color: var(--accent);
}

.go-btn {
    position: absolute;
    right: 6px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: none;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.go-btn svg {
    width: 18px;
    height: 18px;
}

.go-btn:hover {
    background: #6a48e8;
    transform: scale(1.08);
    box-shadow: 0 0 16px var(--accent-glow);
}

.go-btn:active {
    transform: scale(0.95);
}

/* Error */
.error-text {
    color: var(--danger);
    font-size: 13px;
    margin-top: 10px;
    white-space: pre-wrap;
    text-align: center;
}

.error-code {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: "Courier New", monospace;
    margin-top: 4px;
    text-align: center;
}

/* Quick Links */
.quick-links {
    display: flex;
    gap: 10px;
    margin-top: 26px;
    flex-wrap: wrap;
    justify-content: center;
}

.quick-link {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.quick-link:hover {
    color: var(--text-primary);
    background: rgba(124, 92, 252, 0.08);
    border-color: rgba(124, 92, 252, 0.25);
    transform: translateY(-2px);
}

/* ---------- Navigation Bar ---------- */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 10px;
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(20px) saturate(1.3);
    -webkit-backdrop-filter: blur(20px) saturate(1.3);
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.nav-bar.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.nav-btn {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
}

.nav-btn svg {
    width: 16px;
    height: 16px;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.nav-btn:active {
    background: rgba(255, 255, 255, 0.1);
}

.home-btn {
    margin-left: 4px;
}

/* Nav address bar */
.nav-address-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    margin: 0 4px;
}

.nav-search-icon {
    position: absolute;
    left: 12px;
    width: 14px;
    height: 14px;
    color: var(--text-secondary);
    pointer-events: none;
}

#nav-address {
    width: 100%;
    height: 34px;
    padding: 0 12px 0 34px;
    font-family: inherit;
    font-size: 13px;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

#nav-address::placeholder {
    color: var(--text-secondary);
}

#nav-address:focus {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

/* ---------- Frame Container ---------- */
.frame-container {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    background: var(--bg-primary);
    transition: opacity 0.35s ease;
}

.frame-container.hidden {
    display: none;
}

.frame-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

/* ---------- 404 Page (fallback) ---------- */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    color: var(--text-secondary);
}

.error-page h1 {
    font-size: 72px;
    color: var(--accent);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
    .brand {
        font-size: 38px;
    }

    .brand-icon {
        font-size: 30px;
    }

    .tagline {
        font-size: 14px;
    }

    .search-form {
        max-width: 92vw;
    }

    #sj-address {
        height: 48px;
        font-size: 14px;
    }

    .go-btn {
        width: 36px;
        height: 36px;
    }
}