/* ==================== UPLOAD PAGE + DROPZONE ====================
 * Shared by every upload surface. Spec:
 * docs/superpowers/specs/2026-09-04-upload-page-base-design.md
 *
 * Structure the classes assume (frontend/upload/base.html):
 *   .container.upload-page
 *     .upload-heading > .upload-title + .upload-subtitle
 *     form.card.upload-card[data-dropzone-card]
 *       .upload-card-header > .upload-step-icon + .upload-card-heading + .upload-badge
 *       .dropzone[data-dropzone] (frontend/upload/_dropzone.html)
 *       .upload-note > .upload-note-text
 *       .upload-footer > .upload-links + button#upload-submit
 *     .process-steps.process-steps--detailed
 *     .card.upload-supported / .upload-tips
 * Tokens only. First adopter: vendor_invoice/batch_upload.html (4 Sep 2026).
 */

/* ---- Page heading (outside the card) ---- */
.upload-page {
    padding-top: var(--space-6);
    padding-bottom: var(--space-8);
}

.upload-heading {
    margin-bottom: var(--space-5);
}

.upload-title {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--pk-gray-900);
    letter-spacing: -0.3px;
}

.upload-subtitle {
    margin: var(--space-1) 0 0;
    font-size: var(--text-base);
    color: var(--pk-gray-600);
}

/* ---- Step card: the <form> IS the card ---- */
.upload-card {
    padding: var(--space-6);
}

.upload-card.is-dragover {
    box-shadow: 0 0 0 2px var(--pk-orange), var(--shadow-md);
}

.upload-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.upload-step-icon {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid var(--pk-orange);
    border-radius: var(--radius-full);
    background: var(--pk-orange-subtle);
    color: var(--pk-orange);
    font-size: var(--text-lg);
}

.upload-card-heading {
    flex: 1 1 auto;
    min-width: 0;
}

.upload-card-title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--pk-gray-900);
}

.upload-card-subtitle {
    margin: var(--space-1) 0 0;
    font-size: var(--text-sm);
    color: var(--pk-gray-500);
}

.upload-badge {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    background: var(--pk-gray-100);
    color: var(--pk-gray-700);
    font-size: var(--text-caption);
    font-weight: var(--font-medium);
    white-space: nowrap;
}

.upload-badge .bi {
    color: var(--pk-orange);
}

/* ---- Dropzone ----
 * The input is visually hidden but focusable (never display:none, so native
 * `required` validation still surfaces). The Choose button is the keyboard
 * path; a mouse click anywhere in the idle area also opens the picker. */
.dropzone {
    position: relative;
    border: 2px dashed var(--pk-orange);
    border-radius: var(--radius-lg);
    background: var(--pk-orange-subtle);
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.dropzone-input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* The input is a real tab stop even though it is visually hidden: when it
   has keyboard focus, ring whichever face of the zone is showing. */
.dropzone-input:focus-visible ~ .dropzone-idle,
.dropzone-input:focus-visible ~ .dropzone-selected {
    box-shadow: var(--shadow-focus-ring);
    border-radius: var(--radius-lg);
}

.dropzone-idle {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-8) var(--space-5);
    text-align: center;
    cursor: pointer;
}

.dropzone-icon {
    margin-bottom: var(--space-2);
    font-size: var(--text-4xl);
    line-height: 1;
    color: var(--pk-orange);
}

.dropzone-title {
    margin: 0;
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--pk-gray-900);
}

/* gray-600, not gray-500: measured 4.48:1 on the orange-subtle ground in light (4 Sep 2026). */
.dropzone-or {
    margin: 0;
    font-size: var(--text-caption);
    color: var(--pk-gray-600);
}

.dropzone-choose {
    margin-top: var(--space-1);
}

.dropzone-hint {
    margin: var(--space-2) 0 0;
    font-size: var(--text-sm);
    color: var(--pk-gray-600);
}

.dropzone.has-files {
    border-style: solid;
    border-color: var(--color-border);
    background: var(--pk-white);
}

.dropzone.has-files .dropzone-idle {
    display: none;
}

.dropzone.is-dragover {
    border-style: solid;
    border-color: var(--pk-orange);
    background: var(--pk-orange-subtle);
}

.dropzone-selected {
    padding: var(--space-4) var(--space-5);
}

.dropzone-selected[hidden] {
    display: none;
}

.dropzone-summary {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.dropzone-summary > .bi {
    font-size: var(--text-xl);
    color: var(--pk-orange);
}

.dropzone-count {
    font-size: var(--text-md);
    font-weight: var(--font-semibold);
    color: var(--pk-gray-900);
}

.dropzone-total {
    font-size: var(--text-sm);
    color: var(--pk-gray-500);
}

.dropzone-clear {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 0;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--pk-gray-500);
    cursor: pointer;
}

.dropzone-clear:hover {
    background: var(--pk-gray-100);
    color: var(--pk-error);
}

.dropzone-clear:focus-visible,
.dropzone-choose:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus-ring);
}

.dropzone-file-list {
    list-style: none;
    margin: var(--space-3) 0 0;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
}

.dropzone-file {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) 0;
    font-size: var(--text-sm);
    color: var(--pk-gray-800);
}

.dropzone-file > .bi {
    color: var(--pk-orange);
}

.dropzone-file-name {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropzone-file-size {
    font-size: var(--text-caption);
    color: var(--pk-gray-500);
    font-variant-numeric: tabular-nums;
}

/* ---- Note under the dropzone; doubles as the inline validation area ---- */
.upload-note {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    margin: var(--space-3) 0 0;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    background: var(--pk-warning-light);
    color: var(--pk-warning-dark);
    font-size: var(--text-sm);
}

.upload-note > .bi {
    flex: 0 0 auto;
    margin-top: 1px;
}

.upload-note.is-error {
    background: var(--pk-error-light);
    color: var(--pk-error-dark);
}

.upload-note[hidden] {
    display: none;
}

/* A field group that follows the note (eDocs' shipment/document type) gets
   the form's own rhythm; on pages with nothing after the note the next
   sibling is .upload-footer, which this cannot match. */
.upload-note + .form-group {
    margin-top: var(--space-5);
}

/* ---- Footer: secondary links left, primary button right ---- */
.upload-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--pk-gray-100);
}

.upload-links {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.upload-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--pk-gray-600);
    text-decoration: none;
}

.upload-link:hover {
    color: var(--pk-orange);
    text-decoration: none;
}

.upload-link + .upload-link {
    padding-left: var(--space-5);
    border-left: 1px solid var(--pk-gray-200);
}

/* ---- Supported list card ---- */
.upload-supported {
    margin-top: var(--space-5);
    padding: var(--space-6);
}

.upload-section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.upload-section-icon {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--pk-success-light);
    color: var(--pk-success);
    font-size: var(--text-lg);
}

.upload-section-title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--pk-gray-900);
}

.upload-section-subtitle {
    margin: var(--space-1) 0 0;
    font-size: var(--text-sm);
    color: var(--pk-gray-500);
}

.upload-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.upload-chips .status-badge {
    padding: var(--space-2) var(--space-4);
}

/* ---- Tips card ---- */
.upload-tips {
    margin-top: var(--space-5);
    padding: var(--space-5) var(--space-6);
    border: 1px solid var(--pk-info-light);
    border-radius: var(--radius-xl);
    background: var(--pk-info-light);
}

.upload-tips-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0 0 var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--pk-gray-900);
}

.upload-tips-header > .bi {
    font-size: var(--text-xl);
    color: var(--pk-info);
}

.upload-tips-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4) var(--space-6);
}

.upload-tip {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
    line-height: 1.45;
    color: var(--pk-gray-700);
}

.upload-tip > .bi {
    flex: 0 0 auto;
    margin-top: 1px;
    font-size: var(--text-md);
    color: var(--pk-info);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .upload-card {
        padding: var(--space-5);
    }

    .upload-card-header {
        flex-wrap: wrap;
    }

    .dropzone-idle {
        padding: var(--space-6) var(--space-4);
    }

    .upload-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .upload-footer .btn {
        width: 100%;
    }

    .upload-links {
        justify-content: center;
    }
}