:root {
    color-scheme: dark;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background-color: #0b0f1f;
    color: #e6e9f2;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: radial-gradient(circle at top, #1d2747, #0b0f1f 60%);
    min-height: 100vh;
    padding: 24px 20px 40px;
}

.app-shell {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.top-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 20px;
    padding: 16px 20px;
    border-radius: 18px;
    background: rgba(12, 18, 38, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: linear-gradient(135deg, #ff5f6d, #ffc371);
    display: grid;
    place-items: center;
    font-weight: 700;
    color: #0b0f1f;
    letter-spacing: 1px;
}

.eyebrow {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #9aa6d1;
}

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

.nav-center {
    display: flex;
    justify-content: center;
    gap: 18px;
}

.nav-link {
    color: #d7ddf3;
    text-decoration: none;
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
}

.nav-link.active::after,
.nav-link:hover::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 2px;
    background: #ffc371;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 10px;
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background: #e6e9f2;
    margin: 4px 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.app-main {
    display: grid;
    gap: 24px;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
}

h2 {
    font-size: 1.3rem;
    font-weight: 600;
}

.muted {
    color: #9aa6d1;
    font-size: 0.95rem;
    line-height: 1.6;
}

.overview-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.status-card {
    display: grid;
    gap: 16px;
}

.status-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.status-pill {
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #d7ddf3;
    font-size: 0.85rem;
}

.status-pill.success {
    background: rgba(64, 213, 145, 0.2);
    color: #76f1b7;
}

.status-pill.error {
    background: rgba(255, 99, 99, 0.2);
    color: #ffb3b3;
}

.dashboard-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.insights-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background: rgba(14, 19, 38, 0.92);
    padding: 24px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 240px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.9rem;
}

input {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 10px 12px;
    min-height: 44px;
    color: #f5f7ff;
    font-size: 0.95rem;
}

input:focus {
    outline: none;
    border-color: #ffb347;
    box-shadow: 0 0 0 3px rgba(255, 179, 71, 0.2);
}

.btn {
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    padding: 0 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lucide-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

.spin {
    animation: spin 2.2s linear infinite;
}

.spin-slow {
    animation: spin 4s linear infinite;
}

.pulse {
    animation: pulse 1.8s ease-in-out infinite;
}

.float {
    animation: float 2.6s ease-in-out infinite;
}

.swing {
    animation: swing 2.4s ease-in-out infinite;
    transform-origin: top center;
}

.btn-primary {
    background: linear-gradient(135deg, #ff5f6d, #ffc371);
    color: #0b0f1f;
    height: 46px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: #e6e9f2;
    height: 36px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(255, 95, 109, 0.2);
}

.state {
    padding: 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: #b7c0e1;
    font-size: 0.9rem;
}

.roster-list {
    list-style: none;
    display: grid;
    gap: 10px;
}

.roster-item {
    padding: 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: grid;
    gap: 4px;
}

.roster-item span {
    color: #9aa6d1;
    font-size: 0.85rem;
}

.form-grid {
    display: grid;
    gap: 12px;
}

.feedback {
    min-height: 18px;
    font-size: 0.85rem;
    color: #ffb347;
}

.chat {
    display: grid;
    gap: 12px;
}

.chat-log {
    min-height: 160px;
    max-height: 260px;
    overflow-y: auto;
    padding: 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: grid;
    gap: 10px;
}

.chat-message {
    display: grid;
    gap: 4px;
    font-size: 0.92rem;
}

.chat-message strong {
    color: #ffb347;
}

.chat-input {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
}

.analytics {
    gap: 20px;
}

.analytics-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.metric-label {
    color: #9aa6d1;
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.metric {
    font-size: 1.6rem;
    font-weight: 700;
}

.focus-list {
    list-style: none;
    display: grid;
    gap: 12px;
}

.focus-list li {
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    position: relative;
    padding-left: 34px;
}

.focus-list li::before {
    content: '•';
    position: absolute;
    left: 16px;
    color: #ffb347;
}

.app-footer {
    color: #9aa6d1;
    font-size: 0.85rem;
    text-align: center;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.18);
        opacity: 1;
    }
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-3px);
    }
}

@keyframes swing {
    0%,
    100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(8deg);
    }
}

@media (max-width: 900px) {
    .top-nav {
        grid-template-columns: 1fr auto;
        grid-template-areas: 'brand toggle' 'nav nav' 'actions actions';
    }

    .nav-left {
        grid-area: brand;
    }

    .nav-toggle {
        grid-area: toggle;
        display: inline-flex;
    }

    .nav-center {
        grid-area: nav;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        background: rgba(12, 18, 38, 0.95);
        padding: 16px;
        border-radius: 14px;
    }

    .nav-right {
        grid-area: actions;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    body.nav-open .nav-center {
        display: flex;
    }
}

@media (max-width: 720px) {
    body {
        padding: 20px 14px 28px;
    }

    .chat-input {
        grid-template-columns: 1fr;
    }

    .btn-primary {
        width: 100%;
    }
}