/* =========================
   VARIABLES
========================= */

:root {
    --green:       #006644;
    --green-hover: #004f34;
    --green-tint:  #f0f7f3;
    --white:       #ffffff;
    --ink:         #111111;
    --ink-mid:     #4a4a4a;
    --ink-light:   #888888;
    --border:      #d0d0d0;
    --border-dark: #aaaaaa;
    --bg:          #f4f4f4;
}


/* =========================
   RESET & BASE
========================= */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "IBM Plex Sans", "Helvetica Neue", Helvetica, sans-serif;
    background: var(--bg);
    color: var(--ink);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 20px;
    -webkit-font-smoothing: antialiased;
}

body.overlay-open {
    overflow: hidden;
}


/* =========================
   SHELL
========================= */

.shell {
    width: 100%;
    max-width: 560px;
}


/* =========================
   MASTHEAD
========================= */

.masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.wordmark {
    display: flex;
    align-items: center;
    gap: 12px;
}

.wordmark-bar {
    width: 4px;
    height: 32px;
    background: var(--green);
}

.wordmark-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.wordmark-name {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--ink);
}

.wordmark-division {
    font-size: 11px;
    color: var(--ink-light);
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.secure-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
    letter-spacing: 0.03em;
}

.secure-badge svg {
    color: var(--green);
}


/* =========================
   CARD
========================= */

.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 3px solid var(--green);
}

.card-body {
    padding: 40px 40px 44px;
}


/* =========================
   HEADINGS
========================= */

.section-label {
    font-size: 10px;
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green);
    font-weight: 500;
    margin-bottom: 14px;
}

.headline {
    font-size: 26px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
    line-height: 1.25;
    margin-bottom: 10px;
}

.desc {
    font-size: 14px;
    color: var(--ink-mid);
    line-height: 1.65;
    margin-bottom: 36px;
    font-weight: 400;
}


/* =========================
   RULE
========================= */

.rule {
    height: 1px;
    background: var(--border);
    margin-bottom: 28px;
}


/* =========================
   MODE TABS
========================= */

.mode-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 28px;
    border: 1px solid var(--border);
}

.mode-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 16px;
    font-size: 12.5px;
    font-weight: 600;
    font-family: "IBM Plex Sans", sans-serif;
    letter-spacing: 0.01em;
    color: var(--ink-light);
    background: var(--bg);
    border: none;
    border-right: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}

.mode-tab:last-child {
    border-right: none;
}

.mode-tab svg {
    flex-shrink: 0;
    transition: stroke 0.12s;
}

.mode-tab:hover {
    background: var(--green-tint);
    color: var(--ink);
}

.mode-tab.active {
    background: var(--white);
    color: var(--green);
    border-bottom: 2px solid var(--green);
    margin-bottom: -1px;
}

.mode-tab.active svg {
    stroke: var(--green);
}


/* =========================
   MODE PANELS
========================= */

.mode-panel {
    display: block;
}

.mode-panel.hidden {
    display: none;
}


/* =========================
   UPLOAD ZONE
========================= */

.upload-zone {
    border: 1px solid var(--border);
    background: var(--green-tint);
    padding: 36px 28px;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: border-color 0.15s, background 0.15s;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--green);
    background: #e4f1ea;
}

.upload-zone.has-file {
    border-color: var(--green);
    background: #e8f4ed;
}

.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.upload-state {
    pointer-events: none;
}

.upload-state.hidden {
    display: none;
}

.upload-zone-icon {
    color: var(--green);
    margin-bottom: 14px;
    display: flex;
    justify-content: center;
    opacity: 0.7;
}

.upload-zone-icon.selected-icon {
    opacity: 1;
}

.upload-zone-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 4px;
}

.upload-zone-hint {
    font-size: 12px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
    margin-bottom: 16px;
}

.upload-zone-hint.selected-name {
    color: var(--ink-mid);
    word-break: break-all;
    margin-bottom: 6px;
}

.file-meta {
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--green);
    letter-spacing: 0.04em;
    margin-bottom: 0;
}

.formats {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.fmt {
    font-size: 10px;
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.06em;
    color: var(--green);
    border: 1px solid var(--green);
    padding: 2px 8px;
    font-weight: 500;
}


/* =========================
   NOTICE
========================= */

.notice {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 16px;
    padding: 12px 14px;
    background: var(--bg);
    border-left: 3px solid var(--border-dark);
}

.notice svg {
    color: var(--ink-light);
    flex-shrink: 0;
    margin-top: 1px;
}

.notice-text {
    font-size: 12px;
    color: var(--ink-mid);
    line-height: 1.55;
}


/* =========================
   FORM FIELDS (Single mode)
========================= */

.field-group {
    margin-bottom: 18px;
}

.field-label {
    display: block;
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-mid);
    margin-bottom: 8px;
}

.field-input {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--white);
    padding: 11px 14px;
    font-size: 14px;
    font-family: "IBM Plex Sans", sans-serif;
    color: var(--ink);
    outline: none;
    transition: border-color 0.15s;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 0;
}

.field-input::placeholder {
    color: var(--ink-light);
    font-size: 13px;
}

.field-input:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(0, 102, 68, 0.08);
}

.select-wrap {
    position: relative;
}

.field-select {
    padding-right: 36px;
    cursor: pointer;
}

.field-select option,
.field-select optgroup {
    font-family: "IBM Plex Sans", sans-serif;
    font-size: 13px;
}

.select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--ink-light);
    display: flex;
    align-items: center;
}


/* =========================
   BUTTON
========================= */

.submit-btn {
    width: 100%;
    margin-top: 24px;
    border: none;
    cursor: pointer;
    background: var(--green);
    color: var(--white);
    padding: 14px 20px;
    font-size: 13.5px;
    font-weight: 600;
    font-family: "IBM Plex Sans", "Helvetica Neue", Helvetica, sans-serif;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background 0.15s;
}

.submit-btn:hover {
    background: var(--green-hover);
}

.submit-btn:active {
    background: #003d28;
}


/* =========================
   RESULT PANEL (Single mode)
========================= */

.result-panel {
    margin-top: 28px;
    border: 1px solid var(--border);
    border-top: 2px solid var(--green);
    background: var(--white);
}

.result-panel.hidden {
    display: none;
}

.result-divider {
    padding: 10px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.result-divider-label {
    font-size: 10px;
    font-family: "IBM Plex Mono", monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green);
    font-weight: 500;
}

.result-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
}

.result-row:last-child {
    border-bottom: none;
}

.result-key {
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.result-value {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink);
    text-align: right;
    word-break: break-all;
}

.result-value.mono {
    font-family: "IBM Plex Mono", monospace;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.04em;
}

.result-pill {
    font-size: 10px;
    font-family: "IBM Plex Mono", monospace;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 3px 10px;
    border: 1px solid transparent;
}

.pill-resolved {
    background: #d4edda;
    border-color: #a3d4b0;
    color: #1a6b35;
}

.pill-error {
    background: #fde8e8;
    border-color: #f5b8b8;
    color: #8b1a1a;
}


/* =========================
   PROCESSING OVERLAY
========================= */

.processing-overlay {
    position: fixed;
    inset: 0;
    background: rgba(17, 17, 17, 0.55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.processing-overlay.hidden {
    display: none;
}

.processing-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 3px solid var(--green);
    padding: 40px 44px 36px;
    width: 100%;
    max-width: 360px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.processing-spinner {
    margin-bottom: 22px;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.spin {
    animation: spin 0.85s linear infinite;
}

.processing-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}

.processing-sub {
    font-size: 12px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
    letter-spacing: 0.02em;
    margin-bottom: 24px;
}

.processing-progress {
    width: 100%;
    height: 2px;
    background: var(--border);
    overflow: hidden;
}

.processing-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--green);
    transition: width 20s cubic-bezier(0.15, 1, 0.35, 1);
}


/* =========================
   FOOTER
========================= */

.footer {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-note {
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
    letter-spacing: 0.02em;
}

.footer-lock {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--ink-light);
}

.footer-lock svg {
    color: var(--green);
}


/* =========================
   RESPONSIVE
========================= */

@media (max-width: 600px) {
    .card-body {
        padding: 28px 24px 32px;
    }

    .headline {
        font-size: 22px;
    }

    .masthead {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .processing-card {
        padding: 32px 28px 28px;
        margin: 0 16px;
    }
}

/* =========================
   OP TOGGLE (Bulk mode)
========================= */

.op-toggle {
    display: flex;
    gap: 0;
    margin-bottom: 12px;
    border: 1px solid var(--border);
}

.op-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 14px;
    font-size: 12px;
    font-weight: 600;
    font-family: "IBM Plex Sans", sans-serif;
    letter-spacing: 0.01em;
    color: var(--ink-light);
    background: var(--bg);
    border: none;
    border-right: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}

.op-btn:last-child {
    border-right: none;
}

.op-btn:hover {
    background: var(--green-tint);
    color: var(--ink);
}

.op-btn.active {
    background: var(--white);
    color: var(--green);
    border-bottom: 2px solid var(--green);
    margin-bottom: -1px;
}

.op-btn.active svg {
    stroke: var(--green);
}

.op-desc {
    font-size: 12px;
    color: var(--ink-mid);
    line-height: 1.6;
    margin-bottom: 18px;
    padding: 10px 12px;
    background: var(--bg);
    border-left: 3px solid var(--border);
    font-family: "IBM Plex Sans", sans-serif;
}