/* Documents Page */
.documents-page {
    width: min(100%, 1200px);
    margin: 0 auto;
    padding: 1rem;
}

.documents-hero {
    display: grid;
    gap: 1.25rem;
    margin: 1rem 0 1.25rem;
    padding: clamp(1.35rem, 5vw, 3rem);
    border: 1px solid rgba(11, 94, 215, 0.16);
    border-radius: 24px;
    background:
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.18), transparent 20rem),
        linear-gradient(135deg, #07111f 0%, #0f2f63 62%, #0b5ed7 100%);
    color: #fff;
    box-shadow: 0 22px 54px rgba(15, 23, 42, 0.18);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    width: fit-content;
    margin-bottom: 0.85rem;
    padding: 0.38rem 0.7rem;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    color: #dbeafe;
    font-size: 0.78rem;
    font-weight: 800;
}

.documents-hero h1 {
    max-width: 820px;
    margin: 0 0 0.7rem;
    color: #fff;
    font-size: clamp(2rem, 8vw, 4rem);
    line-height: 1.05;
}

.documents-hero p {
    max-width: 680px;
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(1rem, 2.5vw, 1.16rem);
}

.trust-note {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    margin: 0;
    padding: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.1);
}

.tools-container {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.1);
}

.tool-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.55rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    background: #f8fbff;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 52px;
    padding: 0.8rem 0.9rem;
    border: 1px solid transparent;
    border-radius: 14px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font-weight: 800;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tab-btn:hover,
.tab-btn:focus-visible {
    background: #eef5ff;
    color: var(--primary);
}

.tab-btn.active {
    border-color: rgba(11, 94, 215, 0.18);
    background: #fff;
    color: var(--primary);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.tool-content {
    display: none;
    padding: clamp(1rem, 4vw, 2rem);
}

.tool-content.active {
    display: block;
    animation: fade-up 0.22s ease;
}

.tool-heading {
    margin-bottom: 1.25rem;
}

.tool-heading h2 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.25rem;
    color: var(--secondary);
    font-size: clamp(1.25rem, 4vw, 1.85rem);
}

.tool-heading p {
    max-width: 760px;
    color: var(--muted);
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.preset-btn {
    min-height: 92px;
    padding: 0.95rem;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: linear-gradient(180deg, #fff, #f8fbff);
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.preset-btn strong,
.preset-btn span {
    display: block;
}

.preset-btn strong {
    margin-bottom: 0.2rem;
    color: var(--secondary);
}

.preset-btn span {
    color: var(--muted);
    font-size: 0.86rem;
}

.preset-btn:hover,
.preset-btn:focus-visible {
    border-color: rgba(11, 94, 215, 0.28);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.09);
    transform: translateY(-2px);
}

.message-box {
    margin: 0 0 1rem;
    padding: 0.85rem 1rem;
    border: 1px solid #bfdbfe;
    border-radius: 14px;
    background: #eff6ff;
    color: #1e3a8a;
    font-weight: 600;
}

.message-box.error {
    border-color: #fecaca;
    background: #fef2f2;
    color: #991b1b;
}

.message-box.success {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

.message-box.info {
    color: #334155;
}

.upload-area {
    display: grid;
    place-items: center;
    gap: 0.45rem;
    min-height: 190px;
    margin-bottom: 1rem;
    padding: 1.4rem;
    border: 2px dashed #b8c7dc;
    border-radius: 20px;
    background: #f8fbff;
    color: var(--muted);
    cursor: pointer;
    text-align: center;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.upload-area i {
    color: var(--primary);
    font-size: 2.2rem;
}

.upload-area strong {
    color: var(--secondary);
    font-size: 1.05rem;
}

.upload-area span {
    max-width: 34rem;
    font-size: 0.93rem;
}

.upload-area:hover,
.upload-area:focus-visible,
.upload-area.dragover {
    border-color: var(--primary);
    background: #eef5ff;
    box-shadow: inset 0 0 0 4px rgba(11, 94, 215, 0.08);
}

.upload-area input[type="file"] {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.file-summary {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    color: var(--muted);
    word-break: break-word;
}

.file-summary strong {
    color: var(--secondary);
}

.preview-container,
.result-layout {
    display: grid;
    grid-template-columns: minmax(240px, 0.9fr) minmax(0, 1.4fr);
    gap: 1rem;
    align-items: start;
    margin-bottom: 1rem;
}

.preview-card,
.pdf-preview,
.download-area {
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}

.preview-card,
.pdf-preview {
    display: grid;
    gap: 0.8rem;
    place-items: center;
    padding: 1rem;
    text-align: center;
}

.preview-card h3 {
    margin: 0;
    color: var(--secondary);
    font-size: 1rem;
}

.preview-card img {
    width: 100%;
    max-height: 260px;
    object-fit: contain;
    border-radius: 12px;
    background: #f8fafc;
}

.pdf-preview i {
    color: #dc2626;
    font-size: 3.2rem;
}

.pdf-preview p {
    margin: 0;
    color: var(--secondary);
    font-weight: 800;
    word-break: break-word;
}

.original-size {
    color: var(--muted);
    font-size: 0.9rem;
}

.controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.control-group {
    display: grid;
    gap: 0.45rem;
}

.control-group label {
    color: var(--secondary);
    font-weight: 800;
    font-size: 0.92rem;
}

.control-group input,
.control-group select {
    width: 100%;
    min-height: 48px;
    padding: 0.72rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

.control-group input[type="range"] {
    min-height: 48px;
    padding: 0;
    accent-color: var(--primary);
}

.input-group {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 86px;
}

.input-group input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group select {
    border-left: 0;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    background: #f8fafc;
}

.custom-size {
    display: contents;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 48px;
    padding: 0.25rem 0;
}

.checkbox-group input {
    width: 20px;
    min-height: 20px;
    accent-color: var(--primary);
}

.action-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1rem 0;
}

.documents-page .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.78rem 1.05rem;
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.documents-page .btn:hover,
.documents-page .btn:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.12);
}

.documents-page .btn[disabled] {
    cursor: wait;
    opacity: 0.72;
    transform: none;
}

.btn-download {
    background: #0f766e;
    color: #fff;
}

.btn-download:hover {
    background: #115e59;
}

.download-area {
    padding: 1rem;
}

.result-info {
    display: grid;
    gap: 0.55rem;
    align-content: center;
}

.result-info p {
    margin: 0;
    color: var(--muted);
}

.result-info span {
    color: var(--secondary);
    font-weight: 800;
}

.hidden {
    display: none !important;
}

:where(.tab-btn, .preset-btn, .upload-area, .documents-page .btn, .control-group input, .control-group select):focus-visible {
    outline: 3px solid rgba(245, 158, 11, 0.55);
    outline-offset: 3px;
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    .preset-grid,
    .tool-tabs {
        grid-template-columns: 1fr;
    }

    .tab-btn {
        justify-content: flex-start;
    }

    .preview-container,
    .result-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .documents-page {
        padding: 0.9rem;
    }

    .documents-hero {
        border-radius: 20px;
    }

    .tools-container {
        border-radius: 18px;
    }

    .controls {
        grid-template-columns: 1fr;
    }

    .file-summary {
        flex-direction: column;
    }

    .upload-area {
        min-height: 176px;
    }
}

@media (max-width: 425px) {
    .documents-page {
        padding: 0.75rem;
    }

    .tool-tabs,
    .tool-content {
        padding: 0.7rem;
    }

    .documents-hero {
        padding: 1.15rem;
    }

    .documents-hero h1 {
        font-size: clamp(1.9rem, 12vw, 2.6rem);
    }

    .preset-btn,
    .upload-area,
    .preview-card,
    .pdf-preview,
    .download-area {
        border-radius: 14px;
    }

    .action-btns,
    .documents-page .btn {
        width: 100%;
    }
}

@media (max-width: 320px) {
    .input-group {
        grid-template-columns: 1fr;
    }

    .input-group input,
    .input-group select {
        border-radius: 12px;
        border: 1px solid var(--border);
    }
}