/* ============================================
   PDF to EPUB Converter
   Light Mode Default + Dark Mode Support
   Green Theme (conversion / e-reader tools)
   Prefix: pte-
   ============================================ */

:root {
    --pte-transition: 0.25s;

    --pte-primary: #339966;
    --pte-primary-light: #d1fae5;
    --pte-primary-dark: #2b8159;
    --pte-accent: #34d399;

    --pte-success: #339966;
    --pte-success-light: #d1fae5;
    --pte-warning: #f59e0b;
    --pte-warning-light: #fef3c7;
    --pte-danger: #e64e4e;
    --pte-danger-light: #fee2e2;

    --pte-bg: #f2faf6;
    --pte-bg-elevated: #ffffff;
    --pte-bg-secondary: #e6f5ed;
    --pte-bg-tertiary: #c9ebda;

    --pte-text: #14432e;
    --pte-text-secondary: #1c5a3e;
    --pte-text-muted: #6b7280;

    --pte-border: #c9ebda;
    --pte-border-light: #e6f5ed;

    --pte-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --pte-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --pte-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --pte-shadow-primary: 0 4px 14px rgba(51,153,102,0.25);
    --pte-shadow-primary-hover: 0 6px 20px rgba(51,153,102,0.35);

    --pte-radius-sm: 6px;
    --pte-radius-md: 12px;
    --pte-radius-lg: 16px;
    --pte-radius-xl: 24px;
    --pte-radius-full: 9999px;
}

[data-theme="dark"] {
    --pte-primary: #34d399;
    --pte-primary-light: rgba(52,211,153,0.15);
    --pte-primary-dark: #10b981;
    --pte-accent: #6ee7b7;

    --pte-success: #34d399;
    --pte-success-light: rgba(52,211,153,0.15);
    --pte-warning: #fbbf24;
    --pte-warning-light: rgba(251,191,36,0.15);
    --pte-danger: #f87171;
    --pte-danger-light: rgba(248,113,113,0.15);

    --pte-bg: #0c1c14;
    --pte-bg-elevated: #122620;
    --pte-bg-secondary: #173528;
    --pte-bg-tertiary: #1f4634;

    --pte-text: #d1fae5;
    --pte-text-secondary: #a7f3d0;
    --pte-text-muted: #9aa8a0;

    --pte-border: #1f4634;
    --pte-border-light: #173528;

    --pte-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --pte-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --pte-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
}

/* ============================================
   custom_styles.css override
   ============================================ */
.tool-container {
    overflow: visible !important;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}
.tool-main { overflow: visible !important; }

.pte-wrap, .pte-wrap *, .pte-wrap *::before, .pte-wrap *::after {
    box-sizing: border-box;
}

/* ============================================
   Tool Header
   ============================================ */
.tool-header { text-align: center; margin-bottom: 2rem; }
.tool-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--pte-primary);
}
.tool-title i { color: var(--pte-primary); }

.tool-description {
    max-width: 800px;
    margin: 0 auto;
    color: var(--pte-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}
.tool-description a { color: var(--pte-primary); text-decoration: none; }
.tool-description a:hover { text-decoration: underline; }

/* ============================================
   Upload / Dropzone
   ============================================ */
.pte-upload-section { margin-bottom: 1.5rem; }
.pte-dropzone {
    background: var(--pte-bg-elevated);
    border: 2px dashed var(--pte-border);
    border-radius: var(--pte-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--pte-transition);
    box-shadow: var(--pte-shadow-sm);
}
.pte-dropzone:hover,
.pte-dropzone.pte-dragover {
    border-color: var(--pte-primary);
    background: var(--pte-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--pte-shadow-md);
}
.pte-dropzone-icon { color: var(--pte-primary); width: 56px; height: 56px; margin-bottom: 1rem; }
.pte-dropzone-title { margin: 0 0 0.5rem; font-size: 1.5rem; font-weight: 700; color: var(--pte-text); }
.pte-dropzone-subtitle { margin: 0; color: var(--pte-text-muted); font-size: 0.95rem; }
.pte-file-input { display: none; }

/* ============================================
   Selected file chip
   ============================================ */
.pte-file-chip {
    display: none;
    align-items: center;
    gap: 1rem;
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-md);
    box-shadow: var(--pte-shadow-sm);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}
.pte-file-chip.pte-show { display: flex; }
.pte-fc-icon { width: 26px; height: 26px; color: var(--pte-primary); flex: 0 0 auto; }
.pte-fc-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--pte-text); font-weight: 600; }
.pte-fc-size { color: var(--pte-text-muted); font-size: 0.85rem; flex: 0 0 auto; }
.pte-fc-remove {
    background: transparent; border: none; cursor: pointer;
    color: var(--pte-text-muted); padding: 0.375rem; display: inline-flex;
    border-radius: var(--pte-radius-sm); transition: all var(--pte-transition);
}
.pte-fc-remove:hover { background: var(--pte-bg-secondary); color: var(--pte-danger); }
.pte-fc-remove svg, .pte-fc-remove i { width: 18px; height: 18px; }

/* ============================================
   Buttons
   ============================================ */
.pte-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--pte-radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--pte-transition);
    font-family: inherit;
}
.pte-btn-primary {
    width: 100%;
    background: var(--pte-primary);
    color: #ffffff;
    box-shadow: var(--pte-shadow-primary);
    padding: 0.9rem 1.5rem;
    font-size: 1rem;
}
.pte-btn-primary:hover {
    background: var(--pte-primary-dark);
    box-shadow: var(--pte-shadow-primary-hover);
    transform: translateY(-1px);
    color: #ffffff;
}
.pte-btn-primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.pte-btn-secondary {
    background: var(--pte-bg-secondary);
    color: var(--pte-text);
    border: 1px solid var(--pte-border);
}
.pte-btn-secondary:hover {
    background: var(--pte-primary-light);
    color: var(--pte-primary);
    border-color: var(--pte-primary);
}
.pte-btn svg, .pte-btn i { width: 20px; height: 20px; }

/* ============================================
   Settings panel
   ============================================ */
.pte-settings {
    display: none;
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-lg);
    box-shadow: var(--pte-shadow-md);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}
.pte-settings.pte-show { display: block; }
.pte-settings-title { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.35rem; color: var(--pte-text); }
.pte-settings-sub { margin: 0 0 1.5rem; color: var(--pte-text-muted); font-size: 0.9rem; }

/* Mode toggle (reflowable vs image) */
.pte-modes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.75rem;
}
@media (max-width: 700px) { .pte-modes { grid-template-columns: 1fr; } }
.pte-mode {
    min-width: 0;
    border: 1.5px solid var(--pte-border);
    border-radius: var(--pte-radius-md);
    padding: 1.25rem;
    cursor: pointer;
    background: var(--pte-bg);
    transition: all var(--pte-transition);
}
.pte-mode:hover {
    border-color: var(--pte-primary);
    transform: translateY(-2px);
    box-shadow: var(--pte-shadow-md);
}
.pte-mode-active {
    border-color: var(--pte-primary);
    background: var(--pte-primary-light);
    box-shadow: var(--pte-shadow-sm);
}
.pte-mode-icon { width: 28px; height: 28px; color: var(--pte-primary); margin-bottom: 0.6rem; }
.pte-mode-title { font-weight: 700; color: var(--pte-text); margin-bottom: 0.35rem; font-size: 1.05rem; }
.pte-mode-desc { color: var(--pte-text-muted); font-size: 0.85rem; line-height: 1.5; }

/* Preset cards */
.pte-presets {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
@media (max-width: 700px) { .pte-presets { grid-template-columns: 1fr; } }
.pte-preset {
    min-width: 0;
    border: 1.5px solid var(--pte-border);
    border-radius: var(--pte-radius-md);
    padding: 1.25rem;
    cursor: pointer;
    background: var(--pte-bg);
    transition: all var(--pte-transition);
}
.pte-preset:hover {
    border-color: var(--pte-primary);
    transform: translateY(-2px);
    box-shadow: var(--pte-shadow-md);
}
.pte-preset.pte-active {
    border-color: var(--pte-primary);
    background: var(--pte-primary-light);
    box-shadow: var(--pte-shadow-sm);
}
.pte-preset-icon { width: 26px; height: 26px; color: var(--pte-primary); margin-bottom: 0.6rem; }
.pte-preset-title { font-weight: 700; color: var(--pte-text); margin-bottom: 0.35rem; font-size: 1rem; }
.pte-preset-desc { color: var(--pte-text-muted); font-size: 0.83rem; line-height: 1.45; }
.pte-preset-tag {
    display: inline-block;
    margin-top: 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--pte-primary);
    background: var(--pte-primary-light);
    padding: 0.2rem 0.6rem;
    border-radius: var(--pte-radius-full);
}
[data-theme="dark"] .pte-preset-tag { background: rgba(52,211,153,0.2); }

/* Metadata fields */
.pte-opts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
@media (max-width: 700px) { .pte-opts { grid-template-columns: 1fr; } }
.pte-field { min-width: 0; display: flex; flex-direction: column; gap: 0.4rem; }
.pte-field label { font-size: 0.85rem; font-weight: 600; color: var(--pte-text); }
.pte-field input[type="text"] {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-sm);
    background: var(--pte-bg);
    color: var(--pte-text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color var(--pte-transition);
}
.pte-field input[type="text"]:focus { outline: none; border-color: var(--pte-primary); }
.pte-field input[type="text"]::placeholder { color: var(--pte-text-muted); }

/* Checkbox row */
.pte-check {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    margin-bottom: 1.5rem;
}
.pte-check input[type="checkbox"] {
    width: 18px !important;
    height: 18px !important;
    min-width: 18px !important;
    border: 1px solid var(--pte-border) !important;
    background: var(--pte-bg-elevated) !important;
    margin: 0.15rem 0 0 0 !important;
    border-radius: 5px !important;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    position: relative;
    flex: 0 0 auto;
    transition: all var(--pte-transition);
}
.pte-check input[type="checkbox"]:checked {
    background: var(--pte-primary) !important;
    border-color: var(--pte-primary) !important;
}
.pte-check input[type="checkbox"]:checked::after {
    content: "\2713";
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 12px !important;
    line-height: 1;
}
.pte-check label { font-size: 0.9rem; color: var(--pte-text); cursor: pointer; }
.pte-check label span { display: block; color: var(--pte-text-muted); font-size: 0.8rem; margin-top: 0.15rem; }

/* ============================================
   Processing overlay
   ============================================ */
.pte-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 9000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.pte-overlay.pte-show { display: flex; }
.pte-overlay-card {
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-lg);
    box-shadow: var(--pte-shadow-lg);
    padding: 2rem 2.25rem;
    min-width: 340px;
    max-width: 90vw;
    text-align: center;
}
.pte-spinner {
    width: 44px; height: 44px;
    border: 3px solid var(--pte-border);
    border-top-color: var(--pte-primary);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: pte-spin 0.8s linear infinite;
}
@keyframes pte-spin { to { transform: rotate(360deg); } }
.pte-overlay-status { color: var(--pte-text); font-weight: 600; margin-bottom: 1rem; }
.pte-progress {
    height: 8px;
    background: var(--pte-bg-secondary);
    border-radius: var(--pte-radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}
.pte-progress span {
    display: block;
    height: 100%;
    width: 0;
    background: var(--pte-primary);
    border-radius: var(--pte-radius-full);
    transition: width 0.3s ease;
}
.pte-pct { font-weight: 700; color: var(--pte-primary); font-size: 0.9rem; }

/* ============================================
   Result panel
   ============================================ */
.pte-result {
    display: none;
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-lg);
    box-shadow: var(--pte-shadow-md);
    padding: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}
.pte-result.pte-show { display: block; }
.pte-result-icon { width: 52px; height: 52px; color: var(--pte-success); margin-bottom: 0.75rem; }
.pte-result h3 { margin: 0 0 0.4rem; color: var(--pte-text); font-size: 1.25rem; }
.pte-result-sub { margin: 0 0 1.5rem; color: var(--pte-text-muted); }
.pte-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
    margin: 0 auto 1.5rem;
    max-width: 520px;
}
.pte-stat { min-width: 0; }
.pte-stat-val { font-weight: 700; color: var(--pte-text); font-size: 1.1rem; }
.pte-stat-lab { color: var(--pte-text-muted); font-size: 0.78rem; }
.pte-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    align-items: center;
}
.pte-again { font-size: 0.9rem; }

/* ============================================
   Error message
   ============================================ */
.pte-error {
    display: none;
    border: 1px solid var(--pte-danger);
    border-radius: var(--pte-radius-md);
    background: var(--pte-danger-light);
    padding: 1rem 1.25rem;
    color: var(--pte-text);
    font-size: 0.92rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
}
.pte-error.pte-show { display: block; }
.pte-error a { color: var(--pte-primary); text-decoration: none; font-weight: 600; }
.pte-error a:hover { text-decoration: underline; }

/* ============================================
   Related tools
   ============================================ */
.pte-related-tools { margin: 2.5rem 0 0; }
.pte-related-box {
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-lg);
    box-shadow: var(--pte-shadow-sm);
    padding: 1.5rem;
}
.pte-related-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--pte-text);
    margin: 0 0 1rem;
    font-size: 1.05rem;
}
.pte-related-label i { width: 20px; height: 20px; color: var(--pte-primary); }
.pte-related-links { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.pte-related-link {
    text-decoration: none;
    background: var(--pte-bg-secondary);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-full);
    padding: 0.5rem 1.1rem;
    color: var(--pte-text);
    font-size: 0.9rem;
    transition: all var(--pte-transition);
}
.pte-related-link:hover {
    background: var(--pte-primary-light);
    color: var(--pte-primary);
    border-color: var(--pte-primary);
    transform: translateY(-1px);
}

/* ============================================
   Info cards
   ============================================ */
.pte-info-sections { margin-top: 1.75rem; display: grid; gap: 1.25rem; }
.pte-info-card {
    background: var(--pte-bg-elevated);
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-lg);
    box-shadow: var(--pte-shadow-sm);
    padding: 1.75rem;
}
.pte-info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.2rem;
    margin: 0 0 1rem;
    color: var(--pte-text);
}
.pte-info-card h2 i { width: 22px; height: 22px; color: var(--pte-primary); }
.pte-info-card h3 { font-size: 1rem; margin: 0 0 0.35rem; color: var(--pte-text); }
.pte-info-card p {
    color: var(--pte-text-muted);
    line-height: 1.7;
    margin: 0 0 1rem;
    font-size: 0.95rem;
}
.pte-info-card p:last-child { margin-bottom: 0; }
.pte-info-card a { color: var(--pte-primary); text-decoration: none; }
.pte-info-card a:hover { text-decoration: underline; }

.pte-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}
@media (max-width: 700px) { .pte-feature-grid { grid-template-columns: 1fr; } }
.pte-feature { min-width: 0; display: flex; gap: 0.85rem; }
.pte-feature-icon {
    width: 24px; height: 24px;
    color: var(--pte-primary);
    flex: 0 0 auto;
    margin-top: 0.15rem;
}
.pte-feature h3 { margin: 0 0 0.2rem; }
.pte-feature p { margin: 0; font-size: 0.88rem; }

/* ============================================
   FAQ
   ============================================ */
.pte-faq-item { border-bottom: 1px solid var(--pte-border); }
.pte-faq-item:last-child { border-bottom: none; }
.pte-faq-q {
    width: 100%;
    background: transparent;
    border: none;
    text-align: left;
    padding: 1rem 0;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--pte-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    font-family: inherit;
}
.pte-faq-q i { width: 18px; height: 18px; color: var(--pte-primary); transition: transform var(--pte-transition); flex: 0 0 auto; }
.pte-faq-item.open .pte-faq-q i { transform: rotate(180deg); }
.pte-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--pte-transition) ease;
    color: var(--pte-text-muted);
    line-height: 1.7;
}
.pte-faq-item.open .pte-faq-a { max-height: 500px; padding-bottom: 1rem; }
.pte-faq-a p { margin: 0; }
.pte-faq-a a { color: var(--pte-primary); text-decoration: none; }
.pte-faq-a a:hover { text-decoration: underline; }

/* ============================================
   Batch converter additions
   ============================================ */
.pte-file-list { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1.5rem; }
.pte-file-list .pte-file-chip { margin-bottom: 0; }

.pte-batch-file {
    margin-top: 0.5rem;
    color: var(--pte-text-muted);
    font-size: 0.85rem;
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-left: auto;
    margin-right: auto;
}

.pte-batch-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 560px;
    margin: 0 auto 1.5rem;
    text-align: left;
}
.pte-batch-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--pte-border);
    border-radius: var(--pte-radius-sm);
    background: var(--pte-bg);
}
.pte-batch-row i { width: 18px; height: 18px; color: var(--pte-success); flex: 0 0 auto; }
.pte-batch-fail i { color: var(--pte-danger); }
.pte-batch-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--pte-text); font-size: 0.9rem; }
.pte-batch-size { color: var(--pte-text-muted); font-size: 0.8rem; flex: 0 0 auto; }
.pte-batch-note { color: var(--pte-danger); font-size: 0.8rem; flex: 0 0 auto; }
.pte-batch-dl {
    color: var(--pte-primary);
    display: inline-flex;
    padding: 0.3rem;
    border-radius: var(--pte-radius-sm);
    flex: 0 0 auto;
    transition: background var(--pte-transition);
}
.pte-batch-dl:hover { background: var(--pte-primary-light); }
.pte-batch-dl i { color: var(--pte-primary); }