:root {
    color-scheme: dark;
    --bg: #0f172a;
    --panel: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.12);
    --text: #f8fafc;
    --muted: rgba(248, 250, 252, 0.62);
    --blue: #2563eb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(circle at top, #1e293b 0, var(--bg) 42%);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.navbar {
    border-bottom: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(16px);
}

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

.brand {
    font-weight: 800;
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    gap: 1rem;
    color: var(--muted);
}

.main {
    padding: 3rem 0;
}

.glass {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.hero {
    padding: clamp(2rem, 7vw, 5rem);
}

.hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(2.2rem, 6vw, 4.8rem);
    line-height: 0.98;
}

.hero p {
    max-width: 640px;
    margin: 1.25rem 0 0;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border-radius: 10px;
    padding: 0 1rem;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    font-weight: 650;
}

.btn-primary {
    border-color: rgba(37, 99, 235, 0.6);
    background: var(--blue);
}

.flash-wrap {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: grid;
    gap: 0.75rem;
    width: min(360px, calc(100vw - 2rem));
}

.flash-toast {
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 0.85rem 1rem;
    background: rgba(15, 23, 42, 0.92);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.32);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.flash-hide {
    opacity: 0;
    transform: translateY(-6px);
}

.flash-success {
    border-color: rgba(34, 197, 94, 0.35);
    color: #bbf7d0;
}

.flash-error {
    border-color: rgba(239, 68, 68, 0.35);
    color: #fecaca;
}

.flash-warning {
    border-color: rgba(245, 158, 11, 0.35);
    color: #fde68a;
}

.flash-info {
    border-color: rgba(96, 165, 250, 0.35);
    color: #bfdbfe;
}