:root {
    color-scheme: dark;
    --bg-gradient: radial-gradient(circle at top left, #673ab7 0%, #1a0845 40%, #070019 100%);
    --panel-bg: rgba(26, 8, 69, 0.72);
    --panel-border: rgba(255, 255, 255, 0.05);
    --accent: #f9a826;
    --accent-strong: #ff5f6d;
    --text-primary: #f2f3ff;
    --text-secondary: rgba(242, 243, 255, 0.65);
    --sidebar-width: 260px;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border-radius: 18px;
    --shadow-lg: 0 25px 60px rgba(12, 0, 33, 0.45);
    --shadow-sm: 0 10px 30px rgba(12, 0, 33, 0.25);
    font-family: "Inter", "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg-gradient);
    color: var(--text-primary);
}

button,
input,
textarea {
    font: inherit;
    color: inherit;
}

a {
    color: inherit;
}

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

.sidebar {
    background: rgba(8, 0, 20, 0.75);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));
    display: grid;
    place-items: center;
    font-size: 1.9rem;
}

.brand h1 {
    margin: 0;
    font-size: 1.4rem;
    letter-spacing: 0.04em;
}

.brand p {
    margin: 2px 0 0;
    color: var(--text-secondary);
}

nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-item {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 14px;
    padding: 14px 18px;
    text-align: left;
    color: var(--text-secondary);
    transition: background 0.2s ease, color 0.2s ease, border 0.2s ease;
}

.nav-item:hover,
.nav-item:focus {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.main {
    padding: 36px 48px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.main-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-pill {
    background: rgba(255, 255, 255, 0.08);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.main-header h2 {
    margin: 0 0 6px;
    font-size: 2rem;
}

.main-header p {
    margin: 0;
    color: var(--text-secondary);
}

.cta-group {
    display: flex;
    gap: 12px;
}

.cta {
    padding: 12px 22px;
    border-radius: 20px;
    border: none;
    background: linear-gradient(135deg, #ffb75d, #ff5f6d);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    cursor: pointer;
}

.cta.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.cta.ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: var(--text-secondary);
}

.cta.full {
    width: 100%;
    justify-content: center;
}

.cta:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.panel {
    background: var(--panel-bg);
    border-radius: var(--card-border-radius);
    border: 1px solid var(--panel-border);
    padding: 24px 28px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.panel-header h3 {
    margin: 0;
}

.panel-text {
    margin: 0;
    color: var(--text-secondary);
}

.panel-button {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 10px 18px;
    cursor: pointer;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 18px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--card-border-radius);
    padding: 18px 20px;
    display: grid;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-label {
    margin: 0;
    color: var(--text-secondary);
}

.stat-value {
    margin: 0;
    font-size: 1.7rem;
    font-weight: 700;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.history-list.empty {
    color: var(--text-secondary);
    font-style: italic;
}

.history-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 18px 20px;
    display: grid;
    gap: 16px;
}

.history-item header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: baseline;
}

.history-item h4 {
    margin: 0;
}

.history-item time {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.score-chip {
    background: linear-gradient(135deg, #ffd460, #ff9e54);
    color: #24004f;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 700;
    min-width: 44px;
    text-align: center;
}

.score-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px 16px;
    margin: 0;
}

.score-grid dt {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.score-grid dd {
    margin: 4px 0 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.history-notes {
    margin: 0;
    color: var(--text-secondary);
    font-style: italic;
}

.muted {
    opacity: 0.7;
}

.history-notes.normal {
    font-style: normal;
    color: var(--text-primary);
}

.history-comment {
    margin: 0;
    color: #ffd460;
    font-size: 0.95rem;
}

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

.link-button {
    background: transparent;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: 0;
}

.link-button.ghost {
    color: var(--text-secondary);
}

.hidden {
    display: none;
}

.hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.recorder {
    display: grid;
    gap: 18px;
}

.recorder-visual {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 18px;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#waveform {
    width: 100%;
    height: 160px;
    display: block;
}

#record-timer {
    position: absolute;
    right: 18px;
    bottom: 16px;
    background: rgba(0, 0, 0, 0.35);
    padding: 6px 12px;
    border-radius: 12px;
    font-variant-numeric: tabular-nums;
}

.recorder-controls {
    display: flex;
    gap: 12px;
}

.record-button {
    flex: 1;
    padding: 14px 20px;
    border-radius: 16px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(135deg, #5efce8, #736efe);
    color: #18072f;
}

.record-button.secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.rating-form {
    display: grid;
    gap: 16px;
}

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

.field span {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.field.checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
}

.field.checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.field.checkbox span {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.field span small {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    display: block;
}

.settings-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    align-items: end;
}

.settings-divider {
    grid-column: 1 / -1;
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 4px 0;
}

.settings-actions {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.settings-message {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.settings-message.info {
    color: var(--text-secondary);
}

.settings-message.success {
    color: #5efce8;
}

.settings-message.error {
    color: #ff5f6d;
}

.settings-group {
    margin-top: 24px;
    padding: 20px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.settings-group h4 {
    margin: 0 0 6px;
    font-size: 1.1rem;
}

.settings-group p {
    margin: 0;
    color: var(--text-secondary);
    max-width: 520px;
}

.settings-group button {
    flex-shrink: 0;
}

.settings-group.danger {
    border-color: rgba(255, 95, 109, 0.4);
    background: rgba(255, 95, 109, 0.08);
}

.settings-group.danger h4 {
    color: #ff5f6d;
}

.settings-group.danger p {
    color: rgba(255, 186, 186, 0.85);
}

input[type="text"],
input[type="datetime-local"],
textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 12px 14px;
}

input[type="range"] {
    width: 100%;
}

output {
    justify-self: end;
    font-variant-numeric: tabular-nums;
}

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

.status-chip {
    background: rgba(94, 252, 232, 0.2);
    color: #5efce8;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.85rem;
}

.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    background: rgba(12, 0, 33, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 14px 18px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(15px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    white-space: pre-wrap;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.auth-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(8, 0, 20, 0.85);
    backdrop-filter: blur(6px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 20px;
    z-index: 999;
}

body.auth-required .auth-overlay {
    opacity: 1;
    pointer-events: all;
}

body.auth-required .app-shell {
    filter: blur(4px);
    pointer-events: none;
    user-select: none;
}

.auth-card {
    background: rgba(21, 7, 52, 0.95);
    border-radius: 20px;
    padding: 28px 32px;
    width: min(420px, 100%);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: grid;
    gap: 22px;
}

.auth-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.auth-tab {
    padding: 12px 0;
    border-radius: 16px;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s ease, border 0.2s ease, color 0.2s ease;
}

.auth-tab.active {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.24);
    color: var(--text-primary);
}

.auth-forms {
    position: relative;
    min-height: 220px;
}

.auth-form {
    display: none;
    flex-direction: column;
    gap: 16px;
}

.auth-form.active {
    display: flex;
}

.auth-message {
    margin: 0;
    color: var(--text-secondary);
    min-height: 24px;
    font-size: 0.95rem;
}

@media (max-width: 960px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 18px 20px;
    }

    nav {
        flex-direction: row;
    }

    .nav-item {
        flex: 1;
        text-align: center;
    }

    .main {
        padding: 28px 20px 48px;
    }
}

@media (max-width: 600px) {
    .main-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cta-group {
        width: 100%;
    }

    .cta {
        flex: 1;
    }

    .sidebar {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    nav {
        width: 100%;
        gap: 8px;
    }
}