:root {
    --app-bg: #f5f8fb;
    --app-panel: #ffffff;
    --app-text: #172033;
    --app-muted: #647084;
    --app-border: #dce5ef;
    --app-primary: #155eef;
    --app-green: #13966f;
    --app-soft: #eaf1fb;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    color: var(--app-text);
    background:
        linear-gradient(135deg, rgba(21, 94, 239, 0.08), transparent 34%),
        linear-gradient(180deg, #ffffff 0%, var(--app-bg) 100%);
    font-family: "Segoe UI", Tahoma, sans-serif;
}

.app-navbar {
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--app-border);
    backdrop-filter: blur(12px);
}

.brand-mark,
.auth-icon,
.bot-dot {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.brand-mark {
    color: #fff;
    background: var(--app-primary);
}

.portal-hero {
    padding: 64px 0 48px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    margin-bottom: 16px;
    color: var(--app-primary);
    font-weight: 700;
}

.portal-hero h1 {
    max-width: 620px;
    margin-bottom: 16px;
    font-size: clamp(2.2rem, 6vw, 4.8rem);
    line-height: 1;
    letter-spacing: 0;
}

.hero-copy {
    max-width: 560px;
    margin-bottom: 24px;
    color: var(--app-muted);
    font-size: 1.12rem;
}

.portal-preview {
    padding: 18px;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    background: var(--app-panel);
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

.preview-top {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.preview-top span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #cbd5e1;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.preview-card,
.action-card {
    display: grid;
    gap: 8px;
    min-height: 128px;
    padding: 18px;
    color: var(--app-text);
    text-decoration: none;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    background: #fbfdff;
}

.preview-card i,
.action-card i {
    color: var(--app-primary);
    font-size: 1.4rem;
}

.preview-card small,
.action-card small {
    color: var(--app-muted);
}

.preview-card.active {
    color: #fff;
    background: var(--app-primary);
}

.preview-card.active i,
.preview-card.active small {
    color: #fff;
}

.chat-row {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-top: 18px;
    padding: 16px;
    border-radius: 8px;
    background: var(--app-soft);
}

.chat-row p {
    margin: 0;
    color: var(--app-muted);
}

.bot-dot {
    flex: 0 0 auto;
    color: #fff;
    background: var(--app-green);
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 36px;
}

.action-card {
    min-height: 132px;
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.action-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
}

.auth-shell {
    padding: 56px 0;
}

.auth-card {
    max-width: 520px;
    margin: 0 auto;
    padding: 28px;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    background: var(--app-panel);
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

.back-link {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 24px;
    color: var(--app-muted);
    text-decoration: none;
}

.auth-heading {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 24px;
}

.auth-heading h1 {
    margin: 0 0 6px;
    font-size: 2rem;
}

.auth-heading p,
.auth-note {
    color: var(--app-muted);
}

.auth-note {
    display: flex;
    gap: 10px;
    margin-top: 18px;
    padding: 12px;
    border-radius: 8px;
    background: #f8fafc;
}

@media (max-width: 768px) {
    .portal-hero {
        padding-top: 40px;
    }

    .preview-grid,
    .quick-actions {
        grid-template-columns: 1fr;
    }

    .auth-card {
        padding: 22px;
    }

    .navbar .container {
        gap: 14px;
    }

    .navbar-brand {
        width: 100%;
    }
}