/* styles.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

html, body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #1a2a6c);
    color: white;
    min-height: 100vh;
    padding: 20px;
    overflow-y: auto;
}

main {
    max-width: 100%;
    overflow: hidden;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.visualizer-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 30px auto;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#audioVisualizer {
    width: 100%;
    height: 100%;
    display: block;
}

.vis-toggle-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.95rem;
    backdrop-filter: blur(5px);
    transition: all 0.25s ease;
    z-index: 10;
    outline: none;
}

.vis-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.vis-toggle-btn:active {
    transform: scale(0.95);
}

.sound-pad.dragging {
    opacity: 0.5;
    transform: scale(0.95);
    box-shadow: none !important;
}

.step-icon {
    font-size: 1.3rem;
    pointer-events: none;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

p {
    font-size: 1.1rem;
    opacity: 0.9;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 30px;
    align-items: start;
    margin-top: 10px;
}

.col-left, .col-right {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

section {
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    backdrop-filter: blur(5px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

section h2 {
    margin-bottom: 20px;
    text-align: center;
}

.record-controls, .sequencer-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.control-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.control-btn:active {
    transform: translateY(0);
}

#recordingStatus {
    text-align: center;
    font-size: 1.2rem;
    margin-top: 10px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.sequencer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 20px;
    max-width: 100%;
    margin: 20px auto;
    width: 100%;
    height: auto;
    aspect-ratio: 1/1;
    touch-action: manipulation;
}

.record-layout {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 20px;
    align-items: center;
    margin-top: 15px;
}

#samplesListContainer {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 12px;
    height: 180px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

#samplesListContainer h3 {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.8;
    margin-bottom: 2px;
}

.samples-container {
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

.sample-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.2s ease;
    min-height: 50px;
}

.sample-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.preview-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    transition: transform 0.2s ease;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-btn:hover {
    transform: scale(1.2);
}

.sample-name {
    flex-grow: 1;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 5px;
}

.sample-effect-select {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: white;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
    max-width: 130px;
}

.sample-effect-select:hover {
    background: rgba(0, 0, 0, 0.55);
    border-color: rgba(255, 255, 255, 0.35);
}

.delete-btn {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid rgba(231, 76, 60, 0.30);
    color: #e74c3c;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    flex-shrink: 0;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.delete-btn:hover {
    background: rgba(231, 76, 60, 0.45);
    color: white;
    border-color: #e74c3c;
}

/* Enforce scrollable content wrapper */
.samples-container {
    width: 100%;
    overflow-y: auto;
}

.sequencer-step {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 10px 5px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    aspect-ratio: 1/1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.sequencer-step.assigned {
    background-color: color-mix(in srgb, var(--step-color) 22%, transparent);
    border-color: color-mix(in srgb, var(--step-color) 55%, transparent);
    color: var(--step-color);
    box-shadow: 0 4px 15px color-mix(in srgb, var(--step-color) 20%, transparent);
}

.sequencer-step.assigned:hover {
    background-color: color-mix(in srgb, var(--step-color) 32%, transparent);
    border-color: var(--step-color);
    transform: scale(1.04);
}

.sequencer-step.playing {
    background-color: color-mix(in srgb, var(--step-color, #ffffff) 60%, transparent) !important;
    border-color: var(--step-color, #ffffff) !important;
    box-shadow: 0 0 20px var(--step-color, #00f2fe) !important;
    transform: scale(1.08);
}

.sequencer-step.active-column {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}

.bpm-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.bpm-control label {
    font-weight: bold;
}

.bpm-control input {
    width: 60px;
    padding: 5px;
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.3);
    color: white;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.sound-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.sound-pad {
    background-color: color-mix(in srgb, var(--pad-color) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--pad-color) 30%, transparent);
    border-radius: 15px;
    padding: 20px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(5px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    aspect-ratio: 1/1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--pad-color);
}

.sound-pad:hover {
    background-color: color-mix(in srgb, var(--pad-color) 22%, transparent);
    border-color: color-mix(in srgb, var(--pad-color) 60%, transparent);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 40px color-mix(in srgb, var(--pad-color) 45%, transparent);
}

.sound-pad.active {
    background-color: color-mix(in srgb, var(--pad-color) 35%, transparent);
    border-color: var(--pad-color);
    box-shadow: 0 0 25px var(--pad-color);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 15px color-mix(in srgb, var(--pad-color) 40%, transparent); }
    50% { box-shadow: 0 0 35px var(--pad-color); }
    100% { box-shadow: 0 0 15px color-mix(in srgb, var(--pad-color) 40%, transparent); }
}

.sound-pad h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    color: white;
}

.sound-pad .icon {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sound-pad .icon svg {
    width: 72px;
    height: 72px;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Layouts */
@media (max-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .sound-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 12px;
    }
    
    .sound-pad {
        padding: 12px 6px;
    }
    
    .sound-pad .icon svg {
        width: 48px;
        height: 48px;
    }
    
    .sound-pad h3 {
        font-size: 0.9rem;
        margin: 4px 0;
    }
    
    .pad-volume-container {
        width: 90%;
        margin-top: 8px;
        padding: 2px 6px;
    }
    
    .pad-volume-slider {
        height: 3px;
    }
    
    /* Touch friendly range thumbs */
    .pad-volume-slider::-webkit-slider-thumb {
        width: 16px;
        height: 16px;
    }
    
    .pad-volume-slider::-moz-range-thumb {
        width: 16px;
        height: 16px;
    }
    
    .volume-icon {
        font-size: 0.75rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .controls {
        gap: 10px;
    }
    
    .control-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .sequencer-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 5px;
        max-width: 100%;
        width: 100%;
        aspect-ratio: 1/1;
        height: auto;
    }

    .sample-item {
        min-height: 45px;
        font-size: 0.8rem;
        padding: 6px 10px;
    }
}

@media (max-width: 480px) {
    .sequencer-grid {
        gap: 4px;
    }
    
    .sequencer-step {
        padding: 5px 2px;
        font-size: 0.82rem;
    }
    
    .record-layout {
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 15px;
    }
    
    #samplesListContainer {
        height: auto;
        min-height: 160px;
        max-height: 250px;
    }
    
    .sample-item {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 8px;
        padding: 8px 10px;
    }
    
    .sample-name {
        width: calc(100% - 40px);
        margin-right: 0;
        margin-bottom: 2px;
    }
    
    .sample-effect-select {
        max-width: 100%;
        width: 100%;
        margin: 2px 0;
        font-size: 0.75rem;
    }
}

/* Circular Red Record Button */
.record-btn {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    border: 4px solid rgba(255, 255, 255, 0.25);
    color: white;
    font-size: 1.6rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.4);
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    touch-action: none;
    outline: none;
    margin: 5px 0;
}

.record-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 10px 30px rgba(231, 76, 60, 0.6);
    border-color: rgba(255, 255, 255, 0.4);
}

.record-btn:active {
    transform: scale(0.95);
}

.record-btn.recording {
    background: linear-gradient(135deg, #ff2a2a, #d90000);
    animation: recordPulse 1.2s infinite;
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.6);
}

.record-hint {
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.85;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

@keyframes recordPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 42, 42, 0.6);
        transform: scale(1.1);
    }
    50% {
        transform: scale(1.15);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(255, 42, 42, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 42, 42, 0);
        transform: scale(1.1);
    }
}

/* Inline SVG icon styles */
.sound-pad svg {
    color: currentColor;
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: block;
}

.sound-pad:hover svg {
    transform: scale(1.15);
}

.step-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    display: block;
}

.sound-pad {
    position: relative;
}

.key-badge {
    position: absolute;
    top: 10px;
    right: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    pointer-events: none;
    text-transform: uppercase;
    backdrop-filter: blur(2px);
    transition: all 0.3s ease;
}

.sound-pad.active .key-badge {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
}

.sequencer-step.drop-possible {
    border: 2px dashed rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.15);
    animation: pulse-border 1.5s infinite alternate;
}

@keyframes pulse-border {
    0% { border-color: rgba(255, 255, 255, 0.2); }
    100% { border-color: rgba(255, 255, 255, 0.6); }
}

.sequencer-step.drag-over {
    background: rgba(255, 255, 255, 0.25) !important;
    border: 2px solid #00f2fe !important;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.5);
    transform: scale(1.05);
}

/* Pad volume control styling */
.pad-volume-container {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 85%;
    margin-top: 15px;
    background: rgba(0, 0, 0, 0.25);
    padding: 4px 8px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
    z-index: 10;
}

.pad-volume-container:hover {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
}

.volume-icon {
    font-size: 0.8rem;
    opacity: 0.7;
    pointer-events: none;
    user-select: none;
}

.pad-volume-slider {
    flex-grow: 1;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.15);
    height: 4px;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

/* Style range slider thumbs */
.pad-volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--pad-color, #ffffff);
    box-shadow: 0 0 8px var(--pad-color, #ffffff);
    transition: transform 0.15s ease;
}

.pad-volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
}

.pad-volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border: none;
    border-radius: 50%;
    background: var(--pad-color, #ffffff);
    box-shadow: 0 0 8px var(--pad-color, #ffffff);
    transition: transform 0.15s ease;
    cursor: pointer;
}

.pad-volume-slider::-moz-range-thumb:hover {
    transform: scale(1.3);
}

/* Sound Selector Modal Overlay */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.modal.show {
    display: flex;
    opacity: 1;
}

/* Modal Content Box */
.modal-content {
    background: rgba(28, 36, 43, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    width: 90%;
    max-width: 480px;
    padding: 20px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
    transform: scale(0.92);
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.2);
    max-height: 85vh;
    overflow-y: auto;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.6rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    margin: 0;
    transition: color 0.2s;
}

.modal-close:hover {
    color: white;
}

.modal-actions-top {
    margin-bottom: 20px;
}

.modal-action-btn.clear-btn {
    width: 100%;
    background: rgba(231, 76, 60, 0.12);
    border: 1px solid rgba(231, 76, 60, 0.25);
    color: #e74c3c;
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.modal-action-btn.clear-btn:hover {
    background: rgba(231, 76, 60, 0.4);
    color: white;
    border-color: #e74c3c;
}

.modal-section {
    margin-bottom: 22px;
}

.modal-section h4 {
    margin: 0 0 10px 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* Modal Presets Grid */
.modal-presets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.modal-preset-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-preset-item:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.15);
}

.modal-preset-item .icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--preset-color, #ffffff);
}

.modal-preset-item span {
    font-size: 0.72rem;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

/* Modal Samples List */
.modal-samples-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 180px;
    overflow-y: auto;
    padding-right: 4px;
}

.modal-sample-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 10px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-sample-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.18);
}

.modal-sample-item span {
    font-size: 0.82rem;
    font-weight: 500;
}

.modal-sample-badge {
    background: rgba(224, 86, 253, 0.12);
    border: 1px solid rgba(224, 86, 253, 0.25);
    color: #e056fd;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 600;
}