:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --background-color: #F5F5F7;
    --text-color: #1D1D1F;
    --accent-color: #FF2D55;
    --surface-color: #FFFFFF;
    --error-color: #FF3B30;
    --success-color: #34C759;
    --border-radius: 10px;
    --spacing-unit: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #000000;
        --text-color: #F5F5F7;
        --surface-color: #1C1C1E;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.5;
    background-color: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-nav {
    background-color: var(--surface-color);
    padding: calc(var(--spacing-unit) * 2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: static;
    top: 0;
    z-index: 100;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    margin-left: var(--spacing-unit);
}

.nav-links a:hover, .nav-links a.active {
    background-color: var(--primary-color);
    color: white;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 2);
    flex: 1;
    width: 100%;
}

.search-container {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
    align-items: center;
}

#searchInput {
    flex: 1;
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 1rem;
    background-color: var(--surface-color);
    color: var(--text-color);
}

.filter-controls {
    display: flex;
    gap: var(--spacing-unit);
}

.table-container {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: calc(var(--spacing-unit) * 2);
    text-align: left;
}

th {
    background-color: var(--surface-color);
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

tr {
    transition: background-color 0.2s ease;
    cursor: pointer;
}

tr:hover {
    background-color: rgba(0, 122, 255, 0.1);
}

.tab-content {
    background-color: white;
    color: black;
    padding: calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
    font-family: 'SF Mono', Menlo, monospace;
    line-height: 1.4;
    overflow-x: auto;
    margin-top: calc(var(--spacing-unit) * 3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    white-space: pre-wrap;
}

.form-group {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

label {
    display: block;
    margin-bottom: var(--spacing-unit);
    font-weight: 500;
}

input, textarea, select {
    width: 100%;
    padding: calc(var(--spacing-unit) * 1.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 1rem;
    background-color: var(--surface-color);
    color: var(--text-color);
}

textarea {
    min-height: 300px;
    resize: vertical;
    white-space: pre;
    font-family: 'SF Mono', Menlo, monospace;
}

.bottom-actions {
    position: static;
    bottom: 0;
    left: 0;
    right: 0;
    padding: calc(var(--spacing-unit) * 2);
    background-color: var(--surface-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
    z-index: 1000;
}

button {
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
    border: none;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
}

.cancel-btn {
    background-color: rgba(0, 0, 0, 0.1);
    color: var(--text-color);
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.settings-group {
    background-color: var(--surface-color);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.toggle-switch {
    display: flex;
    align-items: center;
    margin: var(--spacing-unit) 0;
}

.toggle-switch input[type="checkbox"] {
    appearance: none;
    width: 51px;
    height: 31px;
    background-color: rgba(120, 120, 128, 0.16);
    border-radius: 31px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-right: calc(var(--spacing-unit) * 2);
}

.toggle-switch input[type="checkbox"]:checked {
    background-color: var(--primary-color);
}

.toggle-switch input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 27px;
    height: 27px;
    border-radius: 50%;
    background-color: white;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input[type="checkbox"]:checked::before {
    transform: translateX(20px);
}

.metronome {
    margin-top: calc(var(--spacing-unit) * 3);
    padding: calc(var(--spacing-unit) * 2);
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
}

.metronome-controls {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    align-items: center;
    margin-top: var(--spacing-unit);
}

.metronome input[type="number"] {
    width: 100px;
    text-align: center;
}

.loading {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4);
    color: var(--text-color);
}

.error-message {
    background-color: var(--error-color);
    color: white;
    padding: calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius);
    text-align: center;
    margin: calc(var(--spacing-unit) * 2) 0;
}

footer {
    text-align: center;
    padding: calc(var(--spacing-unit) * 2);
    background-color: var(--surface-color);
    margin-top: auto;
    padding-bottom: calc(env(safe-area-inset-bottom) + var(--spacing-unit) * 8);
}

footer a {
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

footer a:hover {
    opacity: 1;
}

.header-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-unit);
}

.inline-controls {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    align-items: center;
}

.toggle-switch.small input[type="checkbox"] {
    width: 36px;
    height: 20px;
}

.toggle-switch.small input[type="checkbox"]::before {
    width: 16px;
    height: 16px;
}

.toggle-switch.small input[type="checkbox"]:checked::before {
    transform: translateX(16px);
}


.nav-logo a {
    text-decoration: none;
    color: var(--primary-color);
}

.bpm-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-unit);
}

.bpm-control input {
    width: 60px;
    text-align: center;
    padding: calc(var(--spacing-unit) * 0.5);
}


@media (max-width: 768px) {
    body {
        width: 100vw;
        overflow-x: hidden;
    }

    main {
        padding: 0;
        margin: 0;
        width: 100%;
    }

    .search-container {
        flex-direction: column;
        padding: var(--spacing-unit);
    }

    .filter-controls {
        width: 100%;
    }

    select {
        flex: 1;
    }

    .settings-group,
    .tab-details,
    .form-group,
    .metronome {
        margin: 0;
        padding: var(--spacing-unit);
        border-radius: 0;
    }

    .tab-content {
        border-radius: 0;
        margin: 0;
        padding: var(--spacing-unit);
    }

    .bottom-actions {
        padding-left: 0;
        padding-right: 0;
        padding-bottom: calc(env(safe-area-inset-bottom) + var(--spacing-unit));
    }

    input, textarea, select {
        border-radius: 0;
    }

    .table-container {
        border-radius: 0;
    }

    .nav-links {
        display: flex;
        gap: var(--spacing-unit);
    }
}

@media (max-width: 768px) {
    .controls-group {
        order: -1;
        width: 100%;
        padding: var(--spacing-unit);
        background-color: var(--surface-color);
        margin-bottom: var(--spacing-unit);
    }

    .inline-controls {
        flex-wrap: wrap;
        gap: calc(var(--spacing-unit) * 2);
        justify-content: center;
    }
}

.nav-logo a {
    text-decoration: none;
    color: var(--primary-color);
}

.bpm-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-unit);
}

.bpm-control input {
    width: 60px;
    text-align: center;
    padding: calc(var(--spacing-unit) * 0.5);
}