:root {
    --brand-dark: #112236;
    --brand-light: #1a3350;
    --brand-accent: #8cc63f;
    --brand-accent-hover: #7ab532;
    --brand-accent-glow: rgba(140, 198, 63, 0.15);
    
    --text-dark: #112236;
    --text-body: #334155;
    --text-muted: #64748b;
    
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --bg-surface: #f1f5f9;
    --border: #e2e8f0;
    --border-focus: #8cc63f;
    
    --success: #15803d;
    --success-bg: #f0fdf4;
    --success-border: #bbf7d0;
    
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-card: 0 10px 30px -4px rgba(17, 34, 54, 0.08), 0 4px 12px -2px rgba(17, 34, 54, 0.04);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-page);
    color: var(--text-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-wrapper {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Top Brand Navigation */
.top-nav {
    background-color: var(--brand-dark);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 12px 24px;
}

.nav-container {
    max-width: 1040px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-area {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-logo {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.brand-divider {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.company-name {
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.2px;
}

.tool-tag {
    font-size: 11px;
    color: var(--brand-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.support-badge {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    color: #cbd5e1;
}

/* Main Content Area */
.main-content {
    flex: 1;
    max-width: 1040px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 20px 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.page-intro {
    text-align: center;
}

.page-intro h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 30px;
    font-weight: 800;
    color: var(--brand-dark);
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.page-intro p {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Main Card */
.compress-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* Category Tabs */
.category-tabs {
    display: flex;
    gap: 8px;
    background: var(--bg-surface);
    padding: 6px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: visible;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    text-align: center;
}

.tab-btn:hover {
    color: var(--brand-dark);
    background: rgba(255, 255, 255, 0.6);
}

.tab-btn.active {
    background: #ffffff;
    color: var(--brand-dark);
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(17, 34, 54, 0.06);
    border: 1px solid var(--border);
}

/* Dropzone */
.dropzone {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    padding: 56px 36px;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--brand-accent);
    background: var(--brand-accent-glow);
}

.file-input {
    display: none;
}

.upload-icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    background: rgba(140, 198, 63, 0.15);
    color: #4d7c17;
    border-radius: 50%;
    margin-bottom: 16px;
}

.dropzone h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 19px;
    font-weight: 700;
    color: var(--brand-dark);
    margin-bottom: 8px;
}

.dropzone-hint {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 22px;
}

.browse-btn {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: var(--brand-dark);
    padding: 11px 28px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.browse-btn:hover {
    border-color: var(--brand-dark);
    background: var(--brand-dark);
    color: #ffffff;
}

/* Selected File Box */
.selected-file-box {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #ffffff;
    border: 1px solid var(--border);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    text-align: left;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.file-icon-badge {
    font-size: 28px;
}

.file-meta {
    flex: 1;
    overflow: hidden;
}

.file-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.remove-file-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-body);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.remove-file-btn:hover {
    background: #fee2e2;
    border-color: #fca5a5;
    color: #b91c1c;
}

/* Presets Section */
.presets-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-muted);
}

.preset-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
}

.preset-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.preset-card:hover {
    border-color: #cbd5e1;
    background: #fafafa;
}

.preset-card input[type="radio"] {
    margin-top: 3px;
    accent-color: var(--brand-accent-hover);
}

.preset-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.preset-badge {
    align-self: flex-start;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 7px;
    border-radius: 4px;
    margin-bottom: 2px;
}

.preset-badge.highlight {
    background: rgba(140, 198, 63, 0.18);
    color: #3f6212;
    border: 1px solid rgba(140, 198, 63, 0.35);
}

.preset-name {
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-dark);
}

.preset-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

.preset-card:has(input:checked) {
    border-color: var(--brand-accent);
    background: rgba(140, 198, 63, 0.06);
    box-shadow: 0 0 0 1px var(--brand-accent);
}

.toggle-option {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-top: 4px;
    transition: all 0.2s;
}

.toggle-option:hover {
    background: #f1f5f9;
}

.toggle-option input[type="checkbox"] {
    accent-color: var(--brand-accent-hover);
    width: 16px;
    height: 16px;
}

.toggle-label {
    font-size: 12px;
    color: var(--text-body);
}

/* Target File Size Selection */
.target-size-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.target-size-header {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.target-size-label {
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--brand-dark);
}

.target-size-hint {
    font-size: 11px;
    color: var(--text-muted);
}

.target-size-dropdown {
    width: 100%;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-dark);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    cursor: pointer;
    transition: all 0.2s;
}

.target-size-dropdown:focus {
    border-color: var(--brand-accent);
    box-shadow: 0 0 0 2px var(--brand-accent-glow);
}

/* Action Button */
.action-btn {
    width: 100%;
    background-color: var(--brand-accent);
    color: var(--brand-dark);
    border: none;
    padding: 15px;
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 800;
    border-radius: var(--radius-md);
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(140, 198, 63, 0.3);
    transition: all 0.2s ease;
    margin-top: 6px;
}

.action-btn:hover {
    background-color: var(--brand-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(140, 198, 63, 0.4);
}

/* Progress Section */
.progress-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 0;
}

.status-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 700;
    color: var(--brand-dark);
}

.progress-bar-bg {
    width: 100%;
    height: 10px;
    background: var(--bg-surface);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--brand-accent) 0%, var(--brand-dark) 100%);
    border-radius: 999px;
    transition: width 0.3s ease;
}

.status-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

.progress-action-row {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 6px;
}

.cancel-progress-btn {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #64748b;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.cancel-progress-btn:hover {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #dc2626;
    transform: translateY(-1px);
}

.error-action-box {
    margin-top: 8px;
    padding: 14px 18px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fadeIn 0.2s ease;
}

.error-msg-text {
    font-size: 13px;
    font-weight: 600;
    color: #b91c1c;
    text-align: center;
}

.error-buttons-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.retry-action-btn {
    background: var(--brand-accent);
    border: 1px solid var(--brand-accent);
    color: var(--brand-dark);
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(140, 198, 63, 0.25);
}

.retry-action-btn:hover {
    background: var(--brand-accent-hover);
    transform: translateY(-1px);
}

.uploader-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #101c2e;
    color: #ffffff;
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(140, 198, 63, 0.4);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 9999;
}

.uploader-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.uploader-toast.info {
    border-color: #38bdf8;
}

.uploader-toast.error {
    border-color: #f87171;
    background: #450a0a;
}

/* Results Section */
.result-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.success-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    padding: 14px 18px;
    border-radius: var(--radius-md);
}

.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--success);
    color: #ffffff;
    border-radius: 50%;
    font-size: 15px;
    font-weight: 900;
    flex-shrink: 0;
}

.success-text h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: var(--success);
}

.success-text p {
    font-size: 12px;
    color: #166534;
    margin-top: 1px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.stat-card {
    background: #fafafa;
    border: 1px solid var(--border);
    padding: 14px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: center;
}

.stat-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
}

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 17px;
    font-weight: 800;
    color: var(--brand-dark);
}

.stat-value.highlight {
    color: #0284c7;
}

.stat-value.saved {
    color: var(--success);
}

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.download-btn {
    flex: 2;
    min-width: 180px;
    background-color: var(--brand-accent);
    color: var(--brand-dark);
    padding: 14px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    font-weight: 800;
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(140, 198, 63, 0.25);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.download-btn:hover {
    background-color: var(--brand-accent-hover);
    color: #ffffff;
}

.copy-link-btn {
    flex: 1.5;
    min-width: 160px;
    background: #101c2e;
    color: #ffffff;
    border: 1px solid #1e3a5f;
    padding: 14px;
    border-radius: var(--radius-md);
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.copy-link-btn:hover {
    background: #162b45;
    border-color: var(--brand-accent);
    color: var(--brand-accent);
}

.copy-link-btn.copied {
    background: #065f46 !important;
    border-color: #10b981 !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3) !important;
}

.secondary-btn {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--border);
    color: var(--brand-dark);
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn:hover {
    background: var(--bg-surface);
}

/* Footer */
.app-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    padding-top: 10px;
}

.hidden {
    display: none !important;
}