:root {
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --sidebar-width: 270px;
    --transition: 0.18s ease;
    --font-stack: "Segoe UI", Inter, Arial, sans-serif;
}

html[data-theme="dark"] {
    --bg: #0b1220;
    --bg-elevated: rgba(18, 28, 45, 0.82);
    --bg-panel: rgba(20, 31, 50, 0.72);
    --bg-panel-strong: rgba(24, 37, 59, 0.88);
    --bg-card: rgba(30, 45, 70, 0.58);
    --text: #e5edf8;
    --text-soft: #9eb0c8;
    --border: rgba(120, 148, 190, 0.18);
    --border-strong: rgba(160, 185, 220, 0.24);
    --accent: #60a5fa;
    --accent-strong: #3b82f6;
    --accent-soft: rgba(96, 165, 250, 0.14);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.22);
    --glow: radial-gradient(circle at top right, rgba(59, 130, 246, 0.18), transparent 30%);
}

html[data-theme="light"] {
    --bg: #edf2f8;
    --bg-elevated: rgba(255, 255, 255, 0.86);
    --bg-panel: rgba(255, 255, 255, 0.78);
    --bg-panel-strong: rgba(255, 255, 255, 0.94);
    --bg-card: rgba(248, 251, 255, 0.95);
    --text: #142033;
    --text-soft: #52627a;
    --border: rgba(122, 144, 173, 0.20);
    --border-strong: rgba(122, 144, 173, 0.28);
    --accent: #2563eb;
    --accent-strong: #1d4ed8;
    --accent-soft: rgba(37, 99, 235, 0.10);
    --shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
    --shadow-soft: 0 10px 28px rgba(15, 23, 42, 0.08);
    --glow: radial-gradient(circle at top right, rgba(37, 99, 235, 0.10), transparent 30%);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: var(--font-stack);
    background: var(--bg);
    color: var(--text);
}

body {
    background-image:
        var(--glow),
        linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
}

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

button {
    font: inherit;
}

.app-layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 22px 18px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-soft);
}

.sidebar__brand {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    margin-bottom: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-panel-strong);
}

.sidebar__brand-title {
    font-size: 0.98rem;
    font-weight: 700;
}

.sidebar__brand-subtitle {
    font-size: 0.82rem;
    color: var(--text-soft);
}

.sidebar__nav {
    display: grid;
    gap: 8px;
}

.sidebar__link {
    display: block;
    padding: 13px 14px;
    border-radius: 12px;
    color: var(--text-soft);
    border: 1px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.sidebar__link:hover {
    color: var(--text);
    background: var(--bg-card);
    border-color: var(--border);
}

.sidebar__link--active {
    color: var(--text);
    background: var(--accent-soft);
    border-color: var(--border-strong);
}

.main-shell {
    min-width: 0;
    padding: 22px;
}

.headerbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
    padding: 20px 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-soft);
}

.headerbar__title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.headerbar__subtitle {
    margin: 4px 0 0;
    color: var(--text-soft);
    font-size: 0.95rem;
}

.theme-toggle {
    border: 1px solid var(--border-strong);
    background: var(--bg-card);
    color: var(--text);
    padding: 10px 14px;
    border-radius: 12px;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.theme-toggle:hover {
    transform: translateY(-1px);
}

.content {
    display: grid;
    gap: 22px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 22px;
}

.panel {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-soft);
    padding: 24px;
}

.panel--hero {
    background:
        linear-gradient(135deg, rgba(96, 165, 250, 0.08), rgba(14, 165, 233, 0.03)),
        var(--bg-panel);
}

.panel__eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid var(--border-strong);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.panel__title {
    margin: 0 0 10px;
    font-size: 1.8rem;
    font-weight: 700;
}

.panel__heading {
    margin: 0 0 18px;
    font-size: 1.1rem;
    font-weight: 700;
}

.panel__text {
    margin: 0;
    max-width: 68ch;
    line-height: 1.65;
    color: var(--text-soft);
}

.card-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.action-card {
    display: block;
    padding: 18px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.action-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-soft);
}

.action-card h4 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.action-card p {
    margin: 0;
    line-height: 1.55;
    color: var(--text-soft);
}

.info-list {
    display: grid;
    gap: 14px;
}

.info-list__item {
    display: grid;
    gap: 6px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.info-list__item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-list__label {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-soft);
}

.info-list__value {
    line-height: 1.55;
}

@media (max-width: 980px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

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

@media (max-width: 680px) {
    .main-shell {
        padding: 14px;
    }

    .headerbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .sidebar {
        padding: 14px;
    }

    .panel {
        padding: 18px;
    }
}

.layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: calc(100vh - 64px);
}

.header {
    height: 64px;
    padding: 0 24px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);

    backdrop-filter: blur(14px);
}

.header__left {
    display: flex;
    gap: 10px;
    align-items: baseline;
}

.header__brand {
    font-weight: 700;
    font-size: 1.1rem;
}

.header__app {
    color: var(--text-soft);
    font-size: 0.9rem;
}

.header__right {
    display: flex;
    align-items: center;
}

.sidebar {
    border-right: 1px solid var(--border);
    background: var(--bg-panel);
    padding: 20px;
}

.content {
    padding: 28px;
    display: grid;
    gap: 24px;
}