:root {
    --bg: #f5efe4;
    --bg-soft: #fbf8f3;
    --panel: rgba(255, 252, 246, 0.86);
    --panel-strong: #fffaf1;
    --line: rgba(33, 48, 74, 0.12);
    --text: #1e2430;
    --muted: #68707d;
    --teal: #2f6df6;
    --teal-deep: #1547b7;
    --coral: #ef6d58;
    --gold: #d7a441;
    --navy: #1f3559;
    --white: #ffffff;
    --shadow: 0 24px 60px rgba(31, 53, 89, 0.14);
    --radius-xl: 32px;
    --radius-lg: 22px;
    --radius-md: 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Instrument Sans", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(47, 109, 246, 0.16), transparent 28%),
        radial-gradient(circle at bottom right, rgba(239, 109, 88, 0.12), transparent 22%),
        linear-gradient(135deg, #f7f1e5 0%, #f1efe8 48%, #eef4f4 100%);
}

img {
    display: block;
    max-width: 100%;
}

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

.eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal-deep);
}

h1, h2, h3 {
    margin: 0;
    font-family: "Sora", sans-serif;
    letter-spacing: -0.03em;
}

p {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.primary-button,
.ghost-button {
    border: 0;
    border-radius: 999px;
    padding: 0.95rem 1.35rem;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.primary-button {
    background: linear-gradient(135deg, var(--teal) 0%, var(--navy) 100%);
    color: var(--white);
    box-shadow: 0 16px 30px rgba(47, 109, 246, 0.24);
}

.primary-button.small {
    display: inline-flex;
    align-items: center;
    padding: 0.8rem 1.15rem;
}

.ghost-button {
    background: rgba(255, 255, 255, 0.55);
    color: var(--navy);
    border: 1px solid rgba(31, 53, 89, 0.1);
}

.primary-button:hover,
.ghost-button:hover {
    transform: translateY(-2px);
}

.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem;
}

.auth-shell {
    width: min(1180px, 100%);
    display: grid;
    grid-template-columns: 1.15fr 0.9fr;
    gap: 1.5rem;
    align-items: stretch;
}

.auth-brand-panel,
.auth-card,
.panel,
.sidebar,
.hero-card {
    background: var(--panel);
    border: 1px solid rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    box-shadow: var(--shadow);
}

.auth-brand-panel {
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    position: relative;
    overflow: hidden;
}

.auth-brand-panel::after {
    content: "";
    position: absolute;
    inset: auto -8% -20% auto;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(239, 109, 88, 0.2), transparent 70%);
}

.brand-mark {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-mark img,
.sidebar-brand img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    border-radius: 18px;
    padding: 0.55rem;
    background: rgba(255, 255, 255, 0.72);
}

.hero-copy {
    margin-top: 4rem;
    max-width: 640px;
}

.hero-copy h1 {
    margin-top: 0.6rem;
    font-size: clamp(2.3rem, 4vw, 4.3rem);
}

.lead {
    margin-top: 1.6rem;
    font-size: 1.12rem;
    max-width: 560px;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2.2rem;
}

.feature-list article,
.sidebar-card,
.qeeg-item,
.detection-item,
.recent-item,
.status-panel {
    background: rgba(255, 255, 255, 0.66);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
}

.feature-list article {
    padding: 1rem;
}

.feature-list strong,
.recent-item strong,
.detection-item strong,
.qeeg-item strong,
.status-panel strong {
    display: block;
}

.feature-list span,
.recent-item span,
.detection-item span,
.qeeg-item span,
.status-panel span {
    color: var(--muted);
    font-size: 0.92rem;
    margin-top: 0.35rem;
}

.qeeg-item small {
    color: var(--muted);
    display: block;
    margin-top: 0.45rem;
}

.auth-card {
    border-radius: var(--radius-xl);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-card-header h2 {
    margin-top: 0.6rem;
    font-size: 2rem;
}

.auth-card-header p {
    margin-top: 0.8rem;
}

.auth-form {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.auth-form label {
    display: grid;
    gap: 0.5rem;
}

.auth-form span {
    font-weight: 600;
}

.auth-form input[type="email"],
.auth-form input[type="password"],
.session-form input,
.session-form select,
.session-form textarea {
    width: 100%;
    border: 1px solid rgba(31, 53, 89, 0.14);
    border-radius: 18px;
    padding: 1rem 1rem;
    background: rgba(255, 255, 255, 0.8);
    font: inherit;
}

.session-form {
    display: grid;
    gap: 1rem;
    margin: 1.25rem 0 1rem;
}

.session-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}

.session-form label {
    display: grid;
    gap: 0.45rem;
}

.session-form span {
    font-weight: 600;
}

.session-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.form-message {
    font-size: 0.94rem;
    color: var(--muted);
}

.form-message.is-error {
    color: #b54434;
}

.form-message.is-success {
    color: #23694d;
}

.auth-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: 0.95rem;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.checkbox input {
    accent-color: var(--teal);
}

.auth-footer {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--line);
}

.dashboard-body {
    min-height: 100vh;
    padding: 1.25rem;
}

.dashboard-shell {
    display: grid;
    grid-template-columns: 290px 1fr;
    gap: 1.25rem;
    transition: grid-template-columns 220ms ease;
}

.dashboard-shell-simple {
    grid-template-columns: 1fr;
}

.history-sidebar {
    display: grid;
    grid-template-rows: auto auto auto 1fr;
    gap: 1.15rem;
}

.nav-stack-compact {
    margin-top: 0;
}

.sidebar-chrome {
    display: flex;
    gap: 0.45rem;
    align-items: center;
}

.sidebar-chrome span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    opacity: 0.95;
}

.sidebar-chrome span:nth-child(1) {
    background: #ff8b7b;
}

.sidebar-chrome span:nth-child(2) {
    background: #ffd56a;
}

.sidebar-chrome span:nth-child(3) {
    background: #68d391;
}

.dashboard-shell.sidebar-collapsed {
    grid-template-columns: 96px 1fr;
}

.sidebar {
    border-radius: var(--radius-xl);
    padding: 1.4rem 1.25rem 1.25rem;
    position: sticky;
    top: 1.25rem;
    height: calc(100vh - 2.5rem);
    overflow: hidden;
    transition: padding 220ms ease;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.90), rgba(250, 246, 239, 0.82)),
        radial-gradient(circle at top right, rgba(47, 109, 246, 0.08), transparent 30%);
}

.sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    min-width: 0;
}

.sidebar-brand-copy {
    transition: opacity 180ms ease, transform 180ms ease;
}

.sidebar-brand-copy strong {
    display: block;
    font-size: 1.05rem;
    line-height: 1.05;
}

.sidebar-brand-copy small {
    display: block;
    margin-top: 0.28rem;
    color: var(--muted);
    font-size: 0.84rem;
}

.sidebar-toggle {
    width: 48px;
    height: 48px;
    border: 1px solid rgba(31, 53, 89, 0.08);
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(241, 244, 250, 0.82));
    display: grid;
    place-items: center;
    gap: 4px;
    cursor: pointer;
    flex: 0 0 auto;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.sidebar-toggle span {
    display: block;
    width: 16px;
    height: 2.5px;
    border-radius: 999px;
    background: var(--navy);
    transition: transform 180ms ease, opacity 180ms ease;
}

.nav-stack {
    display: grid;
    gap: 0.45rem;
    margin-top: 0.35rem;
}

.nav-stack a {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.9rem 0.95rem;
    min-height: 54px;
    border-radius: 16px;
    color: var(--muted);
    transition: background 180ms ease, color 180ms ease, transform 180ms ease;
    border: 1px solid rgba(31, 53, 89, 0.05);
    background: rgba(255, 255, 255, 0.44);
}

.nav-icon {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex: 0 0 auto;
    background: rgba(31, 53, 89, 0.18);
}

.nav-stack a span {
    font-weight: 600;
    line-height: 1.2;
}

.nav-stack a.active,
.nav-stack a:hover {
    background: linear-gradient(135deg, rgba(47, 109, 246, 0.18), rgba(21, 71, 183, 0.10));
    color: var(--navy);
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(47, 109, 246, 0.10);
}

.nav-stack a.active .nav-icon,
.nav-stack a:hover .nav-icon {
    background: linear-gradient(135deg, var(--teal), var(--navy));
}

.sidebar-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.95rem 1rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid rgba(31, 53, 89, 0.08);
}

.sidebar-user-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-weight: 700;
    color: var(--white);
    background: linear-gradient(135deg, var(--teal), var(--navy));
}

.sidebar-user-copy strong {
    display: block;
    font-size: 0.95rem;
}

.sidebar-user-copy span {
    color: var(--muted);
    font-size: 0.82rem;
}

.sidebar-card {
    margin-top: 1.4rem;
    padding: 1rem;
}

.sidebar-card h3 {
    margin: 0.45rem 0 0.6rem;
    font-size: 1.2rem;
}

.dashboard-shell.sidebar-collapsed .sidebar {
    padding-left: 0.95rem;
    padding-right: 0.95rem;
}

.dashboard-shell.sidebar-collapsed .sidebar-top {
    flex-direction: column;
    justify-content: center;
}

.dashboard-shell.sidebar-collapsed .sidebar-brand {
    justify-content: center;
}

.dashboard-shell.sidebar-collapsed .sidebar-brand-copy {
    opacity: 0;
    transform: translateX(-8px);
    width: 0;
    overflow: hidden;
    pointer-events: none;
}

.dashboard-shell.sidebar-collapsed .nav-stack {
    margin-top: 1.5rem;
}

.dashboard-shell.sidebar-collapsed .nav-stack a {
    justify-content: center;
    padding: 0.8rem;
    min-height: 48px;
}

.dashboard-shell.sidebar-collapsed .nav-stack a span {
    display: none;
}

.dashboard-shell.sidebar-collapsed .sidebar-footer,
.dashboard-shell.sidebar-collapsed .sidebar-chrome,
.dashboard-shell.sidebar-collapsed .sidebar-card {
    opacity: 0;
    pointer-events: none;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.dashboard-shell.sidebar-collapsed .sidebar-toggle span:first-child {
    transform: translateY(3px) rotate(45deg);
}

.dashboard-shell.sidebar-collapsed .sidebar-toggle span:last-child {
    transform: translateY(-3px) rotate(-45deg);
}

.main-panel {
    display: grid;
    gap: 1.25rem;
    min-width: 0;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    padding: 0.5rem 0.35rem;
}

.topbar h1 {
    margin-top: 0.4rem;
    font-size: clamp(2rem, 4vw, 3.1rem);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.hero-grid,
.content-grid,
.lower-grid {
    display: grid;
    gap: 1.25rem;
}

.hero-grid {
    grid-template-columns: 1.4fr 0.8fr;
}

.hero-grid-single,
.content-grid-single,
.lower-grid-single {
    grid-template-columns: 1fr;
}

.content-grid,
.lower-grid {
    grid-template-columns: 1.2fr 0.9fr;
}

.hero-card,
.panel {
    border-radius: var(--radius-xl);
    padding: 1.4rem;
}

.highlight {
    background:
        linear-gradient(150deg, rgba(47, 109, 246, 0.14), rgba(255, 255, 255, 0.72)),
        rgba(255, 252, 246, 0.88);
}

.hero-card h2 {
    margin-top: 0.55rem;
    font-size: 2rem;
    max-width: 720px;
}

.hero-card p {
    margin-top: 0.85rem;
    max-width: 620px;
}

.upload-card {
    margin-top: 1.35rem;
    display: grid;
    place-items: center;
    text-align: center;
    min-height: 190px;
    border-radius: 22px;
    border: 1.5px dashed rgba(47, 109, 246, 0.3);
    background: rgba(255, 255, 255, 0.58);
    cursor: pointer;
    padding: 1.25rem;
}

.upload-card:has(input[disabled]) {
    opacity: 0.7;
    cursor: not-allowed;
}

.upload-card input {
    display: none;
}

.upload-icon {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(47, 109, 246, 0.14), rgba(31, 53, 89, 0.12));
    font-size: 2rem;
    color: var(--teal-deep);
}

.analysis-progress {
    margin-top: 1rem;
}

.analysis-progress-bar {
    width: 100%;
    height: 12px;
    border-radius: 999px;
    background: rgba(31, 53, 89, 0.08);
    overflow: hidden;
}

.analysis-progress-bar span {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--teal), var(--coral));
    transition: width 240ms ease;
}

.analysis-progress-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 0.6rem;
    font-size: 0.94rem;
}

.stats-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.9rem;
    margin-top: 1rem;
}

.metric-grid div,
.status-panel,
.qeeg-item,
.detection-item {
    padding: 1rem;
}

.metric-grid strong {
    font-size: 2rem;
    display: block;
}

.metric-grid span {
    color: var(--muted);
}

.status-panel {
    margin-top: 1rem;
}

.panel-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.panel-heading h3 {
    margin-top: 0.4rem;
    font-size: 1.5rem;
}

.badge {
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(47, 109, 246, 0.12);
    color: var(--teal-deep);
}

.badge.subtle {
    background: rgba(31, 53, 89, 0.08);
    color: var(--navy);
}

.badge.alert {
    background: rgba(239, 109, 88, 0.16);
    color: #9f402e;
}

.waveform-panel canvas {
    width: 100%;
    height: auto;
    border-radius: 18px;
    background:
        linear-gradient(rgba(31, 53, 89, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 53, 89, 0.06) 1px, transparent 1px),
        rgba(247, 249, 251, 0.92);
    background-size: 100% 28px, 38px 100%, auto;
    border: 1px solid rgba(31, 53, 89, 0.08);
}

.legend-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.9rem;
    color: var(--muted);
    font-size: 0.92rem;
}

.dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.45rem;
}

.cyan { background: #2aa8c9; }
.coral { background: var(--coral); }
.gold { background: var(--gold); }

.qeeg-metrics,
.detection-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.9rem;
}

.brainmap-placeholder {
    position: relative;
    margin-top: 1.1rem;
    min-height: 250px;
    border-radius: 22px;
    background:
        radial-gradient(circle at top, rgba(47, 109, 246, 0.1), transparent 48%),
        rgba(247, 249, 251, 0.9);
    border: 1px solid rgba(31, 53, 89, 0.08);
    overflow: hidden;
}

.brain-outline {
    position: absolute;
    inset: 20px;
    border-radius: 46% 46% 40% 40% / 48% 48% 38% 38%;
    border: 2px solid rgba(31, 53, 89, 0.14);
    background:
        linear-gradient(90deg, transparent 49.5%, rgba(31, 53, 89, 0.12) 50%, transparent 50.5%),
        linear-gradient(transparent 49.5%, rgba(31, 53, 89, 0.12) 50%, transparent 50.5%);
}

.heat {
    position: absolute;
    border-radius: 50%;
    filter: blur(6px);
    opacity: 0.75;
}

.heat-a {
    inset: 64px auto auto 52px;
    width: 88px;
    height: 88px;
    background: rgba(239, 109, 88, 0.56);
}

.heat-b {
    inset: 88px 58px auto auto;
    width: 96px;
    height: 96px;
    background: rgba(215, 164, 65, 0.5);
}

.heat-c {
    inset: auto auto 46px 50%;
    width: 90px;
    height: 90px;
    transform: translateX(-50%);
    background: rgba(47, 109, 246, 0.46);
}

.recent-list {
    display: grid;
    gap: 0.8rem;
}

.recent-list-secondary {
    margin-top: 1rem;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
}

.empty-state {
    border-style: dashed;
}

.qeeg-table {
    display: grid;
    gap: 0.65rem;
}

.qeeg-table-head,
.qeeg-table-row {
    display: grid;
    grid-template-columns: 1.4fr repeat(5, 1fr);
    gap: 1rem;
    padding: 0.9rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.68);
}

.qeeg-table-head {
    font-weight: 700;
    color: var(--navy);
}

.table-link {
    color: var(--teal-deep);
    font-weight: 600;
}

.table-link.disabled {
    color: var(--muted);
}

.topomap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.topomap-card {
    display: grid;
    gap: 0.6rem;
    padding: 1rem;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
}

.topomap-card img {
    width: 100%;
    height: auto;
    border-radius: 14px;
    background: rgba(247, 249, 251, 0.92);
}

.recent-item div:last-child {
    text-align: right;
}

@media (max-width: 1180px) {
    .auth-shell,
    .dashboard-shell,
    .hero-grid,
    .content-grid,
    .lower-grid,
    .session-form-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
    }

    .dashboard-shell.sidebar-collapsed {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .auth-body,
    .dashboard-body {
        padding: 1rem;
    }

    .feature-list,
    .metric-grid,
    .qeeg-metrics,
    .detection-grid {
        grid-template-columns: 1fr;
    }

    .topbar,
    .topbar-actions,
    .auth-meta,
    .session-actions,
    .recent-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .recent-item div:last-child {
        text-align: left;
    }

    .hero-card h2,
    .topbar h1 {
        font-size: 1.7rem;
    }
}