:root {
    --pad-size: 70px;
    --pad-gap: 10px;
    --primary-color: #2c3e50;
    --accent-color: #e74c3c;
    --lcd-color: #a8e6cf;
}

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

body {
    font-family: 'Arial', sans-serif;
    background-color: #34495e;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sampler-container {
    background-color: var(--primary-color);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 400px;
}

@keyframes flashError {
    0%, 100% { background-color: #ecf0f1; }
    50% { background-color: #e74c3c; }
}

.pad.error-flash {
    animation: flashError 0.3s;
}

.display-section {
    margin-bottom: 20px;
}

.lcd-display {
    background-color: var(--lcd-color);
    padding: 10px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.controls-section {
    margin: 20px 0;
}

.effect-controls {
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
}

.effect-knob {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
}

.effect-knob label {
    margin-bottom: 5px;
    font-size: 12px;
}

.effect-knob input[type="range"] {
    width: 100px;
}

.pads-container {
    margin-bottom: 20px;
    width: 100%;
}

.pads-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--pad-gap);
    padding: 10px;
    width: 100%;
    justify-items: center;
}

.pad {
    width: var(--pad-size);
    height: var(--pad-size);
    background-color: #ecf0f1;
    border: 2px solid #bdc3c7;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.1s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    user-select: none;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    -webkit-touch-callout: none; 
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    touch-action: manipulation;
}

.pad.has-sample {
    background-color: #3498db;
    color: white;
}

.pad.has-sample.active {
    background-color: #2ecc71;
    transform: scale(0.95);
}

.pad.available {
    animation: sampleBorderPulse 1.5s infinite;
    border: 2px dashed #3498db;
}

.pad.selected {
    background-color: #3498db;
    transform: scale(1.05);
    transition: all 0.2s ease;
}

.pad.drag-over {
    border: 2px dashed #3498db;
    border-color: rgba(52, 152, 219, 1);
    background-color: #eef7fc;
}

.upload-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    margin-bottom: 15px;
}

.control-btn {
    background-color: #34495e;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    width: 80%;
    margin: 0 auto;
    opacity: 0.8;
}

.control-btn i {
    margin-right: 8px;
}

.control-btn:hover {
    opacity: 1;
}

.control-btn.active {
    background-color: #3498db;
    opacity: 1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transform: scale(0.98);
}

/* Ensure mode buttons keep their styling */
.mode-btn {
    background-color: #34495e;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    opacity: 0.8;
    flex: 1;
}

.mode-btn:hover {
    opacity: 1;
}

.mode-btn.assigning {
    background-color: var(--accent-color);
    opacity: 1;
}

.mode-btn.active {
    opacity: 1;
}

.hidden {
    display: none;
}

@media (max-width: 400px) {
    :root {
        --pad-size: 60px;
        --pad-gap: 8px;
    }

    .sampler-container {
        padding: 10px;
    }
}

.feature-section {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.feature-section h3 {
    color: white;
    font-size: 14px;
    text-transform: uppercase;
    margin: 0 0 10px 0;
    text-align: center;
    letter-spacing: 1px;
}

.section-content {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px;
}

.pad-playback h3 {
    color: white;
    font-size: 14px;
    text-transform: uppercase;
    margin: 0 0 10px 0;
    text-align: center;
    letter-spacing: 1px;
}

.mode-controls {
    display: flex;
    justify-content: space-around;
    gap: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin-bottom: 10px;
}

.name-controls {
    display: flex;
    justify-content: center;
    padding: 10px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.pad.renaming {
    border: 2px dashed var(--accent-color);
    animation: borderPulse 1.5s infinite;
}

.pad.renaming-active {
    background-color: var(--accent-color);
    color: white;
}

.pad-name-input {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    background: transparent;
    border: none;
    text-align: center;
    font-size: 14px;
    color: inherit;
    outline: none;
    font-family: inherit;
}

.pad-name-input:focus {
    background: rgba(255, 255, 255, 0.1);
}

.lcd-display.assigning-mode {
    background-color: #3498db !important;
    color: white;
}

.lcd-display.mode-assigning {
    background-color: var(--accent-color) !important;
    color: white;
}

@keyframes flashText {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.flash-text {
    animation: flashText 0.8s;
}

@keyframes sampleBorderPulse {
    0% {
        border-color: rgba(52, 152, 219, 0.4);
    }
    50% {
        border-color: rgba(52, 152, 219, 1);
    }
    100% {
        border-color: rgba(52, 152, 219, 0.4);
    }
}

.bank-management {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.bank-management h3 {
    color: white;
    font-size: 14px;
    text-transform: uppercase;
    margin: 0 0 10px 0;
    text-align: center;
    letter-spacing: 1px;
}

.bank-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.bank-name-input {
    width: 100%;
}

.bank-name-input input {
    width: 100%;
    padding: 8px;
    border: none;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 14px;
}

.bank-name-input input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.bank-btn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.bank-btn:hover {
    background-color: #2980b9;
}

.bank-btn i {
    font-size: 16px;
}

.bank-import {
    width: 100%;
}

.mode-indicator {
    position: absolute;
    bottom: 5px;
    left: 5px;
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.advanced-active .mode-indicator {
    opacity: 1;
}

.pad.mode-target {
    animation: borderPulse 1.5s infinite;
    border: 2px dashed var(--accent-color);
}

@keyframes borderPulse {
    0% {
        border-color: rgba(231, 76, 60, 0.4);
    }
    50% {
        border-color: rgba(231, 76, 60, 1);
    }
    100% {
        border-color: rgba(231, 76, 60, 0.4);
    }
}

.effect-section {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 15px;
}

.effect-controls {
    display: flex;
    justify-content: space-around;
    gap: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.effect-knob {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.effect-knob label {
    color: white;
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.effect-knob input[type="range"] {
    width: 120px;
    margin: 0;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    height: 8px;
    border-radius: 4px;
}

.effect-knob input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: #3498db;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
}

.effect-knob input[type="range"]::-webkit-slider-thumb:hover {
    background: #2980b9;
}

#advanced-features-btn.active {
    background-color: #3498db;
    opacity: 1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

#advanced-features-btn .fa-chevron-right {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

#advanced-features-btn.active .fa-chevron-right {
    transform: rotate(90deg);
}

/* Add this rule for rename button active state */
.mode-btn.renaming.active {
    background-color: var(--accent-color);
    opacity: 1;
}

/* New styles for record mode */
@keyframes recordFlash {
    0%, 100% { background-color: #ecf0f1; }
    50% { background-color: rgba(231, 76, 60, 0.5); }
}

.pad.record-target:not(.has-sample) {
    animation: recordFlash 1s infinite;
}

.pad.recording {
    background-color: var(--accent-color) !important;
    color: white;
    transform: scale(0.95);
}

.lcd-display.record-mode {
    background-color: var(--accent-color) !important;
    color: white;
}

#record-mode-btn.active {
    background-color: var(--accent-color) !important;
    color: white;
    opacity: 1;
}

.mode-btn.active.assigning {
    opacity: 1;
}

/* Delete mode styles */
#delete-mode-btn.active {
    background-color: var(--accent-color) !important;
    color: white;
    opacity: 1;
}

.lcd-display.delete-mode {
    background-color: var(--accent-color) !important;
    color: white;
}

@keyframes deleteFlash {
    0%, 100% { background-color: #ecf0f1; }
    50% { background-color: rgba(231, 76, 60, 0.5); }
}

.pad.delete-target {
    animation: deleteFlash 1s infinite;
}

/* New styles for preset banks */
.preset-banks {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 0 auto;
    width: 80%;
}

.bank-preset-btn {
    background-color: #34495e;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    opacity: 0.8;
    flex: 1;
    white-space: nowrap;
}

.bank-preset-btn:hover {
    opacity: 1;
    transform: translateY(-1px);
}

.bank-preset-btn:active {
    transform: translateY(1px);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.bank-preset-btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

.bank-preset-btn .loading-icon {
    display: none;
    margin-right: 4px;
}

.bank-preset-btn .default-icon {
    margin-right: 4px;
}

.bank-preset-btn.loading .loading-icon {
    display: inline-block;
    animation: spin 1s linear infinite;
}

.bank-preset-btn.loading .default-icon {
    display: none;
}

/* About section styles */
.about-controls {
    display: flex;
    justify-content: space-around;
    gap: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.about-btn {
    background-color: #34495e;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    opacity: 0.8;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.about-btn:hover {
    opacity: 1;
    transform: translateY(-1px);
}

.about-btn:active {
    transform: translateY(1px);
}

.about-btn i {
    font-size: 16px;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--primary-color);
    padding: 20px;
    border-radius: 10px;
    max-width: 90%;
    width: 500px;
    max-height: 80vh;
    position: relative;
    color: white;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    transition: transform 0.2s ease;
}

.modal-close:hover {
    transform: scale(1.1);
}

.modal-text {
    margin-top: 20px;
    max-height: calc(80vh - 60px);
    overflow-y: auto;
    padding-right: 10px;
}

.modal-text::-webkit-scrollbar {
    width: 8px;
}

.modal-text::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.modal-text::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.modal-text::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

.hidden {
    display: none;
}