:root {
    /* Light Theme (Default) */
    --primary-color: #007AFF;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --danger-color: #FF3B30;
    --bg-body: #F2F2F7;
    --bg-card: #FFFFFF;
    --bg-header: rgba(255, 255, 255, 0.8);
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --border-color: #D1D1D6;
    --input-bg: #FAFAFA;
    --hover-bg: rgba(0, 0, 0, 0.05);
    --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --border-radius: 16px;
    --header-height: 60px;
}

[data-theme="dark"] {
    --primary-color: #0A84FF;
    --success-color: #30D158;
    --warning-color: #FF9F0A;
    --danger-color: #FF453A;
    --bg-body: #000000;
    --bg-card: #1C1C1E;
    --bg-header: rgba(28, 28, 30, 0.8);
    --text-primary: #FFFFFF;
    --text-secondary: #98989D;
    --border-color: #38383A;
    --input-bg: #2C2C2E;
    --hover-bg: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--bg-header);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
    text-decoration: none;
}

.brand i {
    color: var(--primary-color);
    font-size: 24px;
}

.controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--hover-bg);
}

.nav-link.active {
    background-color: var(--text-primary);
    color: var(--bg-card);
}

/* Form Controls */
.theme-btn,
.lang-select {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    outline: none;
}

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

.lang-select {
    font-size: 20px;
    padding: 4px 8px;
    border: none;
}

.lang-select:hover {
    background: var(--hover-bg);
}

main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 30px auto;
    padding: 0 24px;
}

.title-area {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 17px;
    max-width: 600px;
    margin: 0 auto;
}

.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--card-shadow);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

    header {
        padding: 12px;
        height: auto;
        flex-direction: column;
        gap: 12px;
    }

    nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 5px;
    }

    .controls {
        width: 100%;
        justify-content: space-between;
        margin-top: 10px;
    }
}

textarea {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: monospace;
    font-size: 14px;
    resize: vertical;
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.helper-text {
    background: rgba(0, 122, 255, 0.08);
    /* Light blue tint */
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--primary-color);
    margin-bottom: 16px;
    display: flex;
    gap: 10px;
}

[data-theme="dark"] .helper-text {
    background: rgba(10, 132, 255, 0.15);
    color: #4da3ff;
}

.helper-link {
    text-decoration: underline;
    font-weight: 600;
    cursor: pointer;
    color: inherit;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}

.btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.1);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-danger {
    background-color: var(--danger-color);
    display: none;
    /* hidden default */
}

.btn-danger:hover {
    background-color: #d63a32;
}

.check-group {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

/* Progress Bar */
.progress-container {
    height: 6px;
    width: 100%;
    background: var(--input-bg);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 20px;
    display: none;
    /* hidden by default */
}

.progress-bar {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 8px;
    display: none;
}

/* Stats */
.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
}

/* Upload & Mode */
.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    cursor: pointer;
    background: var(--input-bg);
    margin: 16px 0;
    transition: all 0.2s;
}

.file-upload:hover {
    border-color: var(--primary-color);
}

.file-upload i {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.mode-selector {
    background: var(--input-bg);
    padding: 4px;
    border-radius: 10px;
    display: flex;
    margin: 16px 0;
    border: 1px solid var(--border-color);
}

.mode-btn {
    flex: 1;
    padding: 8px;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.mode-btn.active {
    background: var(--bg-card);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

/* Results */
.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.label {
    color: var(--text-primary);
    font-weight: 500;
}

.count-badge {
    padding: 4px 12px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 14px;
}

.actions {
    gap: 8px;
    display: flex;
}

.action-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Badges Colors */
.bg-success {
    background: rgba(52, 199, 89, 0.15);
    color: var(--success-color);
}

.bg-warning {
    background: rgba(255, 149, 0, 0.15);
    color: var(--warning-color);
}

.bg-danger {
    background: rgba(255, 59, 48, 0.15);
    color: var(--danger-color);
}

.bg-neutral {
    background: rgba(142, 142, 147, 0.15);
    color: var(--text-secondary);
}

/* Table */
.table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-top: 16px;
}

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

th,
td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

th {
    background: var(--input-bg);
    position: sticky;
    top: 0;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
    text-transform: uppercase;
}

footer {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 13px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    background: rgba(0, 122, 255, 0.1);
    padding: 6px 12px;
    border-radius: 999px;
}

.iframe-wrapper iframe {
    height: calc(100vh - 200px);
    border-radius: var(--border-radius);
    border: none;
    width: 100%;
}

/* Ad Sidebars */
.ad-sidebar {
    position: fixed;
    top: 90px;
    width: 160px;
    /* Standard Skyscraper width */
    height: calc(100vh - 120px);
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ad-left {
    left: 20px;
}

.ad-right {
    right: 20px;
}

.ad-box {
    width: 100%;
    height: 600px;
    /* Height for vertical banner */
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: all 0.3s;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    box-shadow: var(--card-shadow);
}

.ad-box:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.ad-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Hide ads on smaller screens to prevent overlap */
@media (max-width: 1600px) {
    .ad-sidebar {
        display: none;
    }
}