* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 45%, #0f172a 100%);
    color: #e2e8f0;
}

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

.hero {
    background: linear-gradient(135deg, #2563eb, #0ea5e9);
    padding: 40px 24px;
    border-bottom-left-radius: 32px;
    border-bottom-right-radius: 32px;
    color: #f8fafc;
}

.eyebrow {
    margin: 0 0 12px;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(248, 250, 252, 0.8);
}

.hero h1 {
    margin: 0;
    font-size: clamp(2rem, 3vw, 3rem);
}

.hero-subtitle {
    margin: 12px 0 0;
    color: rgba(248, 250, 252, 0.9);
    max-width: 720px;
    line-height: 1.6;
}

.main-content {
    width: min(1200px, calc(100% - 32px));
    margin: -40px auto 40px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.card,
.list-card,
.form-card,
.report-card {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(148, 163, 184, 0.1);
    border-radius: 24px;
    padding: 28px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.35);
}

.auth-card {
    max-width: 420px;
    margin: 40px auto 0;
}

.auth-card h2,
.form-card h3,
.report-card h3,
.summary-card h3,
.list-card h4 {
    margin-top: 0;
    margin-bottom: 18px;
    color: #f8fafc;
}

form {
    display: grid;
    gap: 14px;
}

label {
    font-size: 0.95rem;
    color: #cbd5e1;
}

input,
select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: rgba(15, 23, 42, 0.98);
    color: #f8fafc;
}

input:focus,
select:focus,
button:focus {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

button {
    border: none;
    border-radius: 14px;
    padding: 14px 20px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: #0ea5e9;
    color: #0f172a;
}

.btn-secondary {
    background: rgba(148, 163, 184, 0.12);
    color: #e2e8f0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.menu-tabs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.tab-btn {
    background: rgba(148, 163, 184, 0.08);
    color: #e2e8f0;
    padding: 16px 18px;
    border-radius: 16px;
    font-weight: 600;
}

.tab-btn.active {
    background: #0ea5e9;
    color: #0f172a;
}

.summary-grid,
.panel-grid,
.report-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    padding: 24px;
    min-height: 130px;
}

.summary-card h3,
.summary-card h4 {
    margin-bottom: 12px;
}

.summary-card p {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    color: #f8fafc;
}

.status-list {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
}

.list-card {
    overflow: hidden;
}

.list-card table,
.report-card table {
    width: 100%;
    border-collapse: collapse;
}

.list-card th,
.list-card td,
.report-card th,
.report-card td {
    text-align: left;
    padding: 14px 12px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    color: #e2e8f0;
}

.list-card thead th,
.report-card thead th {
    color: #94a3b8;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.room-pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 0;
}

.room-pill {
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(14, 165, 233, 0.12);
    color: #e2e8f0;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.calc-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    background: rgba(148, 163, 184, 0.08);
    border-radius: 14px;
    margin-top: 4px;
}

.calc-line span {
    color: #cbd5e1;
}

.form-message {
    margin-top: 12px;
    color: #f8fafc;
}

.note {
    margin: 0;
    color: #94a3b8;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

@media (max-width: 900px) {
    .status-list,
    .panel-grid {
        grid-template-columns: 1fr;
    }
    .menu-tabs {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 28px 18px;
    }
    .main-content {
        margin: -20px auto 24px;
    }
    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }
    .menu-tabs {
        grid-template-columns: 1fr;
    }
}