:root {
    --bg: #f4f7fb;
    --bg-soft: #eef2f7;
    --panel: rgba(255, 255, 255, 0.96);
    --panel-soft: #f8fafc;
    --panel-border: #d9e2ec;
    --text: #172554;
    --muted: #64748b;
    --primary: #2563eb;
    --accent: #0f766e;
    --warning: #d97706;
    --danger: #dc2626;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: "Space Grotesk", sans-serif;
    background:
        linear-gradient(180deg, #f8fbff 0%, #f3f7fb 100%);
    color: var(--text);
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    padding: 26px 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: #ffffff;
    border-right: 1px solid var(--panel-border);
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand-mark {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text);
    text-decoration: none;
    margin-bottom: 36px;
}

.brand-mark strong {
    display: block;
    font-size: 1.1rem;
}

.brand-mark small {
    color: var(--muted);
}

.brand-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: #e8f0ff;
    border: 1px solid var(--panel-border);
    font-size: 1.35rem;
    color: var(--primary);
}

.nav-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-link-custom {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    color: var(--muted);
    text-decoration: none;
    border-radius: 14px;
    transition: 0.2s ease;
}

.nav-link-custom:hover {
    color: var(--text);
    background: #eef4ff;
}

.sidebar-footer {
    margin-top: 24px;
}

.user-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding: 12px 14px;
    border-radius: 14px;
    background: #eefaf8;
    border: 1px solid var(--panel-border);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: none;
}

.content-area {
    flex: 1;
    padding: 30px;
}

.top-strip {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 26px;
}

.eyebrow {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
    color: #475569;
    margin-bottom: 10px;
}

.page-heading {
    margin: 0;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.hero-panel,
.glass-card,
.stat-card {
    border: 1px solid var(--panel-border);
    background: var(--panel);
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.hero-panel {
    padding: 34px;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 28px;
    overflow: hidden;
}

.hero-copy h2 {
    font-size: clamp(2rem, 3vw, 3.35rem);
    line-height: 1.05;
    margin-bottom: 18px;
}

.hero-copy p {
    color: var(--muted);
    font-size: 1.02rem;
    max-width: 680px;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.glass-card {
    padding: 24px;
}

.stat-card {
    padding: 24px;
}

.stat-card span,
.usage-row span,
.comparison-card p,
.section-heading p,
.visualizer-body p {
    color: var(--muted);
}

.stat-card strong {
    display: block;
    font-size: 2rem;
    margin: 8px 0;
}

.spotlight {
    background:
        linear-gradient(145deg, rgba(56, 189, 248, 0.18), rgba(52, 211, 153, 0.15)),
        var(--panel);
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.section-heading h3 {
    margin: 0;
    font-size: 1.25rem;
}

.comparison-card {
    height: 100%;
    padding: 18px;
    border-radius: 16px;
    background: var(--panel-soft);
    border: 1px solid var(--panel-border);
}

.comparison-card h4 {
    font-size: 1rem;
    margin-bottom: 12px;
}

.usage-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.usage-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 16px;
    background: var(--panel-soft);
    border-radius: 16px;
    border: 1px solid var(--panel-border);
}

.table-dark {
    --bs-table-bg: transparent;
    --bs-table-striped-bg: rgba(148, 163, 184, 0.06);
    --bs-table-hover-bg: rgba(37, 99, 235, 0.06);
    --bs-table-color: var(--text);
    --bs-table-border-color: var(--panel-border);
}

.mono-input,
.result-block,
pre {
    font-family: "JetBrains Mono", monospace;
}

.form-control,
.form-select {
    border-radius: 14px;
    border-color: var(--panel-border);
    background: #ffffff;
    color: var(--text);
    padding: 0.8rem 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.12);
}

.result-block,
pre {
    margin: 0;
    padding: 16px;
    border-radius: 14px;
    background: #f8fafc;
    color: #0f172a;
    white-space: pre-wrap;
    word-break: break-word;
    border: 1px solid var(--panel-border);
}

.visualizer-steps {
    padding-left: 18px;
    color: var(--text);
}

.strength-meter {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.strength-bar {
    height: 12px;
    border-radius: 999px;
    background: #e2e8f0;
    overflow: hidden;
}

.strength-bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--danger), var(--warning), var(--accent));
    transition: width 0.25s ease;
}

.auth-shell {
    display: grid;
    place-items: center;
    min-height: calc(100vh - 180px);
}

.auth-card {
    width: min(100%, 520px);
}

.btn-primary {
    background: var(--primary);
    border: 1px solid var(--primary);
}

.btn-primary:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

.btn-outline-light {
    color: var(--text);
    border-color: var(--panel-border);
    background: #ffffff;
}

.btn-outline-light:hover {
    color: var(--text);
    border-color: #cbd5e1;
    background: #f8fafc;
}

.clean-card {
    border-radius: 18px;
}

.subtle-card {
    background: #fbfdff;
}

.field-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 0.5rem;
}

.copy-btn {
    white-space: nowrap;
}

.copy-btn i {
    margin-right: 0.25rem;
}

.generated-key-output h5 {
    margin-top: 14px;
    font-size: 0.95rem;
}

.reveal {
    animation: none;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 991px) {
    .app-shell {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .content-area {
        padding: 20px;
    }

    .hero-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575px) {
    .content-area {
        padding: 16px;
    }

    .glass-card,
    .stat-card,
    .hero-panel {
        padding: 18px;
        border-radius: 16px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }
}