:root {
    --primary-color: #5865F2;
    --primary-dark: #4752c4;
    --secondary-color: #36393F;
    --background-color: #2F3136;
    --text-color: #FFFFFF;
    --gray-light: #72767d;
    --border-color: #40444B;
    --success-color: #57F287;
    --error-color: #ED4245;
    --warning-color: #FEE75C;
    --info-color: #5865F2;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    animation: fadeInDown 0.5s ease-out;
}

header p {
    font-size: 1.1rem;
    color: var(--gray-light);
    animation: fadeInUp 0.5s ease-out 0.2s both;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.upload-container {
    background-color: var(--secondary-color);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 3rem 2rem;
    text-align: center;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.upload-container:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.2);
}

.upload-container.highlight {
    border-color: var(--primary-color);
    background-color: rgba(88, 101, 242, 0.1);
    transform: scale(1.02);
}

.upload-label {
    display: block;
    cursor: pointer;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.upload-container:hover .upload-icon,
.upload-container.highlight .upload-icon {
    transform: scale(1.1) rotate(5deg);
}

.supported-formats {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-light);
}

input[type="file"] {
    display: none;
}

.settings {
    background-color: var(--secondary-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease-out 0.3s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.setting-group {
    margin-bottom: 1.5rem;
}

.setting-group:last-child {
    margin-bottom: 0;
}

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.size-option {
    padding: 0.5rem 1rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.size-option:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
}

.size-option.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(88, 101, 242, 0.3);
}

.custom-size {
    display: flex;
    align-items: center;
}

input[type="number"] {
    width: 120px;
    padding: 0.5rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    transition: border-color 0.2s ease;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

input[type="number"].error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 2px rgba(237, 66, 69, 0.2);
}

input[type="number"].error:focus {
    border-color: var(--error-color);
}

select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.preview-container {
    background-color: var(--secondary-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.video-preview {
    width: 100%;
    background-color: #000;
    position: relative;
}

.video-preview::before {
    content: '';
    display: block;
    padding-top: 56.25%; /* 16:9 aspect ratio */
}

video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.info-panel {
    padding: 1.5rem;
}

.file-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-item span:first-child {
    font-weight: 600;
    color: var(--gray-light);
    font-size: 0.9rem;
}

.size-value {
    font-size: 1.2rem;
    font-weight: 700;
}

.reduction-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--success-color);
}

.compression-progress {
    background-color: var(--secondary-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.3s ease-out;
}

.progress-bar {
    height: 24px;
    background-color: var(--background-color);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    width: 0%;
    transition: width 0.3s ease;
    background-size: 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.progress-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    from {
        background-position: 1rem 0;
    }
    to {
        background-position: 0 0;
    }
}

.progress-text {
    text-align: center;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.progress-hint {
    text-align: center;
    font-size: 0.9rem;
    color: var(--gray-light);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease-out;
}

button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

button:active::before {
    width: 300px;
    height: 300px;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.primary-btn:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.secondary-btn {
    background-color: var(--secondary-color);
    color: white;
    border: 1px solid var(--border-color);
}

.secondary-btn:hover:not(:disabled) {
    background-color: var(--background-color);
    transform: translateY(-2px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

button.loading {
    color: transparent;
}

.error-message, .success-message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
    animation: slideIn 0.3s ease-out;
}

.error-message {
    background-color: rgba(237, 66, 69, 0.2);
    color: var(--error-color);
    border-left: 4px solid var(--error-color);
}

.success-message {
    background-color: rgba(87, 242, 135, 0.2);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--gray-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--secondary-color);
}

.privacy-note {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--success-color);
}

.hidden {
    display: none !important;
}

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--text-color);
    animation: spin 0.8s linear infinite;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Tool switcher */
.tool-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.5rem 0 2rem;
}

.tool-tab {
    padding: 0.6rem 1.25rem;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tool-tab:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-color);
}

.tool-tab.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.tool-panel {
    display: none;
}

.tool-panel.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Markdown Formatter */
.markdown-header {
    margin-bottom: 1rem;
}

.markdown-header button {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.editor {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 1.5rem;
}

.editor textarea,
.editor #output {
    width: 100%;
    min-height: 200px;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--secondary-color);
    color: var(--text-color);
    font-family: 'Roboto', -apple-system, sans-serif;
    font-size: 1rem;
    resize: vertical;
    overflow-y: auto;
}

.editor #output {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 1.5rem;
}

.control-group {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    align-items: flex-start;
}

.control-group h3 {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-light);
}

.control-group button {
    margin-right: 6px;
    margin-bottom: 6px;
}

.editor-footer {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.editor-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.editor-actions-group {
    display: flex;
    gap: 6px;
}

.char-count-nitro {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

#char-count {
    font-size: 0.9rem;
    color: var(--gray-light);
}

#nitro-toggle {
    background-color: #ff73fa;
    color: white;
    padding: 6px 12px;
    font-size: 0.9rem;
}

#nitro-toggle:hover {
    background-color: #ff4ff7;
}

.template-controls {
    display: inline-flex;
    gap: 6px;
    flex-wrap: wrap;
}

.template-controls input {
    padding: 0.5rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    width: 150px;
}

#toggle-cheatsheet {
    margin-bottom: 1rem;
}

.cheatsheet-panel {
    display: none;
    margin-top: 1rem;
    padding: 1.25rem;
    background-color: var(--secondary-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.cheatsheet-panel.show {
    display: block;
}

.cheatsheet-panel h2 {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.cheatsheet-panel ul {
    margin: 0;
    padding-left: 1.5rem;
}

.cheatsheet-panel li {
    margin-bottom: 0.35rem;
}

/* Light theme for markdown */
body.light-theme {
    background-color: #ffffff;
    color: #2e3338;
}

body.light-theme .editor textarea,
body.light-theme .editor #output {
    background-color: #f2f3f5;
    color: #2e3338;
    border-color: #d4d7dc;
}

body.light-theme .control-group button {
    background-color: #5865f2;
}

body.light-theme .control-group button:hover {
    background-color: #4752c4;
}

/* Modal overlay */
.modal-overlay {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.hidden {
    display: none !important;
}

.modal-overlay .modal-content {
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    max-width: 500px;
    width: 100%;
    border-radius: 8px;
    color: var(--text-color);
}

.modal-overlay .modal-content h2 {
    margin-bottom: 1rem;
}

.timestamp-sections {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.timestamp-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.timestamp-grid button {
    padding: 8px 12px;
}

.custom-timestamp {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.custom-timestamp input,
.custom-timestamp select {
    padding: 8px;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
}

#close-timestamp-modal {
    margin-top: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .upload-container {
        padding: 2rem 1rem;
    }

    .action-buttons {
        flex-direction: column;
    }

    .size-options {
        flex-direction: column;
    }

    .size-option, .custom-size input {
        width: 100%;
    }

    .tool-nav {
        flex-direction: column;
    }

    .tool-tab {
        width: 100%;
    }
}