/**
 * styles.css — vCard Forge
 *
 * Two-pane workspace: property editor (left) + sticky live output (right).
 * Navy + teal scheme; dark and light themes via [data-theme] on <html>.
 * System font stack only — no external font dependencies.
 *
 * Original work Copyright (c) jaylikesbunda
 * Modifications Copyright (c) PBNZ 2026
 * Licensed under GNU GPL v3.
 */

/* ============================================================================
 * SECTION: Design Tokens
 * ========================================================================= */

:root {
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
        Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', Consolas, 'Courier New', monospace;

    --transition-speed: 0.2s;
    --radius: 10px;
    --radius-sm: 7px;
    --radius-lg: 14px;
}

/* --- Dark theme (default) --- */
[data-theme="dark"] {
    --primary: #00b8a9;
    --primary-hover: #00d4c3;
    --primary-glow: rgba(0, 184, 169, 0.25);
    --bg: #0f1729;
    --bg-surface: rgba(22, 33, 62, 0.92);
    --bg-input: rgba(30, 42, 72, 0.9);
    --bg-inset: rgba(13, 20, 38, 0.85);
    --text: #e8ecf1;
    --text-secondary: #8e99a4;
    --border: #243049;
    --input-border: #2e4063;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --accent-warn: #ff6b6b;
    --accent-amber: #ffb74d;
    --accent-success: #00e676;
    --capacity-ok: #00b8a9;
    --capacity-over: #ff6b6b;
}

/* --- Light theme --- */
[data-theme="light"] {
    --primary: #00897b;
    --primary-hover: #00695c;
    --primary-glow: rgba(0, 137, 123, 0.15);
    --bg: #f5f7fa;
    --bg-surface: rgba(255, 255, 255, 0.95);
    --bg-input: rgba(240, 243, 248, 0.95);
    --bg-inset: rgba(233, 237, 243, 0.9);
    --text: #1a2332;
    --text-secondary: #5a6577;
    --border: #dde2ea;
    --input-border: #c8cfd8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --accent-warn: #e53935;
    --accent-amber: #ef6c00;
    --accent-success: #2e7d32;
    --capacity-ok: #00897b;
    --capacity-over: #e53935;
}

/* System preference auto-detection (when no explicit data-theme set) */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --primary: #00897b;
        --primary-hover: #00695c;
        --primary-glow: rgba(0, 137, 123, 0.15);
        --bg: #f5f7fa;
        --bg-surface: rgba(255, 255, 255, 0.95);
        --bg-input: rgba(240, 243, 248, 0.95);
        --bg-inset: rgba(233, 237, 243, 0.9);
        --text: #1a2332;
        --text-secondary: #5a6577;
        --border: #dde2ea;
        --input-border: #c8cfd8;
        --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
        --accent-warn: #e53935;
        --accent-amber: #ef6c00;
        --accent-success: #2e7d32;
        --capacity-ok: #00897b;
        --capacity-over: #e53935;
    }
}

:root:not([data-theme]) {
    --primary: #00b8a9;
    --primary-hover: #00d4c3;
    --primary-glow: rgba(0, 184, 169, 0.25);
    --bg: #0f1729;
    --bg-surface: rgba(22, 33, 62, 0.92);
    --bg-input: rgba(30, 42, 72, 0.9);
    --bg-inset: rgba(13, 20, 38, 0.85);
    --text: #e8ecf1;
    --text-secondary: #8e99a4;
    --border: #243049;
    --input-border: #2e4063;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --accent-warn: #ff6b6b;
    --accent-amber: #ffb74d;
    --accent-success: #00e676;
    --capacity-ok: #00b8a9;
    --capacity-over: #ff6b6b;
}

/* ============================================================================
 * SECTION: Base
 * ========================================================================= */

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

html {
    font-size: 15px;
}

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
    transition: background var(--transition-speed), color var(--transition-speed);
}

#bgCanvas {
    position: fixed;
    inset: 0;
    z-index: -1;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.hidden {
    display: none !important;
}

/* ============================================================================
 * SECTION: Shell layout
 * ========================================================================= */

.app-shell {
    max-width: 1400px;
    margin: 0 auto;
    padding: 18px 22px 40px;
}

.app-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 6px 4px 16px;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
}

.app-title {
    font-size: 1.55rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--primary);
}

.app-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.theme-toggle {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.theme-toggle:hover {
    border-color: var(--primary);
}

.workspace {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 18px;
    align-items: start;
}

.output-pane {
    position: sticky;
    top: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
}

@media (max-width: 980px) {
    .workspace {
        grid-template-columns: 1fr;
    }

    .output-pane {
        position: static;
        max-height: none;
        overflow: visible;
    }
}

/* ============================================================================
 * SECTION: Cards & sections
 * ========================================================================= */

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 16px 18px;
    margin-bottom: 16px;
    backdrop-filter: blur(6px);
}

.output-pane .card {
    margin-bottom: 0;
}

.section-card h2,
.output-header h2 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--text-secondary);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.section-hint {
    font-size: 0.72rem;
    color: var(--text-secondary);
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px 10px;
}

/* ============================================================================
 * SECTION: Form controls
 * ========================================================================= */

.input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
    min-width: 0;
}

.input-group label,
.toolbar-label {
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
}

input[type="text"],
input[type="url"],
input[type="email"],
input[type="tel"],
input[type="date"],
select,
textarea {
    width: 100%;
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    padding: 8px 11px;
    font-family: inherit;
    font-size: 0.92rem;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

textarea {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

input.input-invalid {
    border-color: var(--accent-warn);
}

.field-hint {
    font-size: 0.74rem;
    color: var(--text-secondary);
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px 12px;
}

.field-grid .span-2 {
    grid-column: span 2;
}

@media (max-width: 560px) {
    .field-grid .span-2 {
        grid-column: span 1;
    }
}

/* ============================================================================
 * SECTION: Buttons
 * ========================================================================= */

.btn {
    background: var(--primary);
    color: #fff;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 9px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-speed), opacity var(--transition-speed);
}

.btn:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--primary-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn-ghost:hover:not(:disabled) {
    border-color: var(--accent-warn);
    color: var(--accent-warn);
    background: transparent;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
}

.btn-icon:hover {
    color: var(--accent-warn);
    background: var(--bg-inset);
}

.btn-add-row {
    background: transparent;
    border: 1px dashed var(--input-border);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    width: 100%;
    margin-top: 4px;
    transition: border-color var(--transition-speed), color var(--transition-speed);
}

.btn-add-row:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ============================================================================
 * SECTION: Segmented control
 * ========================================================================= */

.segmented-control {
    display: inline-flex;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}

.segmented-control input[type="radio"] {
    display: none;
}

.segmented-control label {
    padding: 5px 13px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: calc(var(--radius-sm) - 2px);
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed);
    white-space: nowrap;
}

.segmented-control input[type="radio"]:checked+label {
    background: var(--primary);
    color: #fff;
}

/* ============================================================================
 * SECTION: Editor toolbar & import panels
 * ========================================================================= */

.editor-toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.toolbar-actions {
    flex-direction: row;
    align-items: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.import-panel label {
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 6px;
}

.panel-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.fetch-row {
    display: flex;
    gap: 8px;
}

.fetch-row input {
    flex: 1;
}

/* ============================================================================
 * SECTION: Multi-value rows & type chips
 * ========================================================================= */

.prop-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border);
}

.prop-row:last-of-type {
    border-bottom: none;
}

.prop-row .input-group {
    flex: 1;
    margin-bottom: 0;
}

.prop-row-side {
    display: flex;
    align-items: center;
    gap: 2px;
    padding-top: 4px;
}

.chip-set {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    max-width: 220px;
}

.chip {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px 9px;
    cursor: pointer;
    transition: all var(--transition-speed);
    user-select: none;
}

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

.chip.chip-on {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.pref-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.05rem;
    color: var(--text-secondary);
    padding: 2px 4px;
    line-height: 1;
}

.pref-toggle.pref-on {
    color: var(--accent-amber);
}

.adr-block {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    margin-bottom: 10px;
    background: var(--bg-inset);
}

.adr-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

/* Read-only passthrough properties */
.prop-readonly {
    align-items: center;
}

.prop-key-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary);
    min-width: 90px;
    word-break: break-all;
}

.readonly-value {
    background: var(--bg-inset);
    color: var(--text-secondary);
}

/* ============================================================================
 * SECTION: Output pane
 * ========================================================================= */

.output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.byte-counter {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.source-preview {
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.55;
    overflow-x: auto;
    max-height: 320px;
    overflow-y: auto;
    white-space: pre;
}

.source-preview .tok-name {
    color: var(--primary);
    font-weight: 600;
}

.source-preview .tok-param {
    color: var(--accent-amber);
}

.source-preview .tok-delim {
    color: var(--text-secondary);
}

.validation-panel {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.diag {
    display: flex;
    gap: 8px;
    align-items: baseline;
    font-size: 0.8rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.diag-error {
    color: var(--accent-warn);
    background: rgba(255, 107, 107, 0.08);
    border-color: rgba(255, 107, 107, 0.25);
}

.diag-warning {
    color: var(--accent-amber);
    background: rgba(255, 183, 77, 0.08);
    border-color: rgba(255, 183, 77, 0.25);
}

.diag-info {
    color: var(--text-secondary);
    background: var(--bg-inset);
    border-color: var(--border);
}

.diag-ok {
    color: var(--accent-success);
    font-size: 0.8rem;
    padding: 4px 2px;
}

.diag .diag-prop {
    font-family: var(--font-mono);
    font-weight: 700;
    white-space: nowrap;
}

.output-actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.output-actions .btn {
    flex: 1;
}

/* --- NFC card --- */
.nfc-controls {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.capacity-bar-container {
    height: 8px;
    border-radius: 999px;
    background: var(--bg-inset);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-top: 6px;
}

.capacity-bar-fill {
    height: 100%;
    width: 0;
    border-radius: 999px;
    background: var(--capacity-ok);
    transition: width var(--transition-speed), background var(--transition-speed);
}

.capacity-bar-fill.over-capacity {
    background: var(--capacity-over);
}

.capacity-warning {
    color: var(--accent-warn);
    font-size: 0.78rem;
    min-height: 1.2em;
    margin-top: 4px;
}

.badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 999px;
    padding: 1px 8px;
}

.required-badge {
    background: rgba(255, 183, 77, 0.15);
    color: var(--accent-amber);
}

.send-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
    min-height: 1.2em;
    margin-top: 8px;
}

.send-status.success {
    color: var(--accent-success);
}

.send-status.error {
    color: var(--accent-warn);
}

/* ============================================================================
 * SECTION: Footer & modal
 * ========================================================================= */

.app-footer {
    margin-top: 26px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.78rem;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 420px;
    width: calc(100% - 40px);
    padding: 20px 22px;
}

.modal-content h2 {
    font-size: 1.05rem;
    margin-bottom: 10px;
}

.modal-body ul {
    margin: 8px 0 8px 20px;
}

.modal-footer {
    margin-top: 14px;
    text-align: right;
}
