/* ============================================
   SecuraKey Manager — Synth Design System
   ============================================ */

:root {
    /* Surfaces */
    --bg-void: #000000;
    --bg-surface: #0a0a0a;
    --bg-elevated: #1a1a1a;
    --bg-raised: #282828;
    --bg-hover: #333333;

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.12);
    --border-active: rgba(25, 208, 232, 0.4);
    --border-focus: rgba(25, 208, 232, 0.6);

    /* Accent */
    --accent: #19d0e8;
    --accent-glow: #40e0f0;
    --accent-deep: #008394;
    --accent-gradient: linear-gradient(135deg, #20b1c3, #008394);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    --text-inverse: #000000;

    /* Semantic */
    --success: #4ade80;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Motion */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --duration: 200ms;
    --duration-slow: 400ms;
}

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

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg-void);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ---- Nav ---- */
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-default);
    position: sticky;
    top: 0;
    z-index: 100;
    background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 6px 6px;
}

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

.brand-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.brand-text em {
    font-family: 'Instrument Serif', serif;
    font-style: italic;
    color: var(--accent);
}

/* ---- LED ---- */
.led {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    flex-shrink: 0;
}

.led-active {
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent), 0 0 16px rgba(25, 208, 232, 0.3);
    animation: led-pulse 2s ease-in-out infinite;
}

.led-success { background: var(--success); box-shadow: 0 0 8px var(--success); }
.led-error { background: var(--error); box-shadow: 0 0 8px var(--error); }
.led-off { background: #333; box-shadow: none; animation: none; }

@keyframes led-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ---- Container ---- */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ---- Buttons ---- */
.btn {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    padding: 10px 20px;
    border-radius: 999px;
    transition: all var(--duration) var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--text-inverse);
    box-shadow:
        0 2px 0 rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow:
        0 4px 12px rgba(25, 208, 232, 0.3),
        0 2px 0 rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: var(--bg-raised);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
    box-shadow:
        0 2px 0 rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    font-size: 1.25rem;
    padding: 4px 12px;
}

.btn-ghost:hover { color: var(--text-primary); }

.btn-danger {
    background: transparent;
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-sm { padding: 6px 14px; font-size: 0.6875rem; }

.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    filter: grayscale(0.5);
}

/* ---- Key Buttons (hardware style) ---- */
.btn-key {
    font-family: 'DM Mono', monospace;
    font-size: 0.625rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    padding: 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all var(--duration) var(--ease);
    box-shadow:
        0 3px 0 rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.btn-key:hover {
    background: var(--bg-hover);
    color: var(--accent);
    border-color: var(--border-active);
}

.btn-key:active {
    transform: translateY(2px);
    box-shadow:
        0 1px 0 rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn-key:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-key svg { stroke: currentColor; }

.key-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

/* ---- Grille Panel ---- */
.grille-panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    padding: 24px;
    background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 6px 6px;
}

/* ---- Status Bar ---- */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.stat-group {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.5625rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.digital-readout {
    font-family: 'DM Mono', monospace;
    font-weight: 500;
    font-size: 0.875rem;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
}

/* ---- Card ---- */
.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 6px 6px;
}

.card-title {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.card-body {
    padding: 24px;
}

/* ---- Account List ---- */
.account-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.account-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    transition: all var(--duration) var(--ease);
}

.account-item:hover {
    border-color: var(--border-active);
    background: rgba(25, 208, 232, 0.03);
}

.account-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.account-index {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    width: 24px;
    text-align: center;
}

.account-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.account-issuer {
    font-weight: 600;
    font-size: 0.9375rem;
}

.account-email {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.account-actions {
    display: flex;
    gap: 8px;
}

/* ---- Empty state ---- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 48px 24px;
    color: var(--text-muted);
    text-align: center;
}

.empty-icon {
    color: var(--text-muted);
    opacity: 0.4;
}

/* ---- Inputs ---- */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
    flex: 1;
}

.input-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.625rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.input {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.875rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: 10px 14px;
    color: var(--text-primary);
    transition: border-color var(--duration) var(--ease);
    outline: none;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.input:focus {
    border-color: var(--border-focus);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), 0 0 0 3px rgba(25, 208, 232, 0.1);
}

.input.mono {
    font-family: 'DM Mono', monospace;
    letter-spacing: 0.05em;
}

.input::placeholder {
    color: var(--text-muted);
}

select.input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.input-row {
    display: flex;
    gap: 12px;
}

/* ---- Modal ---- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 16px;
}

.modal-backdrop.visible {
    display: flex;
}

.modal {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
}

.modal-header h3 {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-subtle);
}

/* ---- QR Scanner ---- */
.qr-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg-void);
    border-radius: 12px;
    overflow: hidden;
}

.qr-viewport video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-frame {
    width: 200px;
    height: 200px;
    border: 2px solid var(--accent);
    border-radius: 12px;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
}

/* ---- Toast ---- */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 999px;
    font-family: 'DM Mono', monospace;
    font-size: 0.8125rem;
    z-index: 300;
    transition: transform var(--duration-slow) var(--ease-out);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
}

.toast.toast-success { border-color: rgba(74, 222, 128, 0.4); }
.toast.toast-error { border-color: rgba(239, 68, 68, 0.4); }

/* ---- Body text ---- */
.body-sm { font-size: 0.8125rem; }
.mono { font-family: 'DM Mono', monospace; }

/* ---- Tags ---- */
.tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.5625rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 500;
}
.tag-success { background: rgba(74, 222, 128, 0.15); color: var(--success); }
.tag-muted { background: rgba(255, 255, 255, 0.06); color: var(--text-muted); }

/* ---- Flasher ---- */
.flash-hero {
    display: flex;
    align-items: center;
    gap: 24px;
}

.flash-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border-radius: 16px;
    border: 1px solid var(--border-subtle);
}

.flash-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.flash-step {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.step-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    border-radius: 50%;
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    color: var(--accent);
    flex-shrink: 0;
}

.flash-button-wrap {
    display: flex;
    justify-content: center;
    padding: 16px 0;
}

.flash-unsupported {
    padding: 12px 20px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    color: var(--error);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    text-align: center;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 0.875rem;
}

.flash-files {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.flash-file-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.flash-file-row .input-label {
    width: 120px;
    flex-shrink: 0;
}

.flash-file-input {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.file-input {
    display: none;
}

.file-name {
    font-size: 0.75rem;
    color: var(--text-muted);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.flash-addr {
    font-size: 0.6875rem;
    color: var(--accent);
    flex-shrink: 0;
}

.flash-controls {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.flash-options {
    display: flex;
    align-items: flex-end;
    gap: 24px;
}

.toggle-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.625rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.toggle-wrap input { display: none; }

.toggle {
    width: 40px;
    height: 22px;
    background: var(--bg-raised);
    border-radius: 11px;
    border: 1px solid var(--border-default);
    position: relative;
    transition: background var(--duration) var(--ease);
}

.toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 14px;
    height: 14px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--duration) var(--ease);
}

.toggle-wrap input:checked + .toggle {
    background: var(--accent-deep);
    border-color: var(--border-active);
}

.toggle-wrap input:checked + .toggle::after {
    left: 21px;
    background: var(--accent);
}

/* ---- Console ---- */
.console-output {
    background: var(--bg-void);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.6;
    padding: 16px;
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    border-radius: 0 0 16px 16px;
}

.console-line {
    display: block;
    white-space: pre-wrap;
    word-break: break-all;
}

.console-info { color: var(--text-muted); }
.console-data { color: var(--text-secondary); }
.console-success { color: var(--success); }
.console-error { color: var(--error); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--accent-deep); border-radius: 3px; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
    .stat-group { gap: 16px; }
    .status-bar { flex-direction: column; align-items: flex-start; }
    .key-grid { grid-template-columns: repeat(2, 1fr); }
    .input-row { flex-direction: column; gap: 0; }
    .container { padding: 16px 12px; }
    .nav-bar { padding: 12px 16px; }
    .flash-hero { flex-direction: column; text-align: center; }
    .flash-file-row { flex-direction: column; align-items: flex-start; }
    .flash-controls { flex-direction: column; }
    .flash-options { flex-direction: column; gap: 12px; }
}

/* ---- Console Log ---- */

.console-card {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 90;
    margin: 0;
    border-radius: 12px 12px 0 0;
    border-bottom: none;
    max-height: 50vh;
    display: flex;
    flex-direction: column;
    transition: max-height 0.3s ease;
}

.console-card.collapsed {
    max-height: 44px;
}

.console-card.collapsed .console-body {
    display: none;
}

.console-card.collapsed .console-toggle {
    transform: rotate(-90deg);
}

.console-header {
    cursor: pointer;
    user-select: none;
    flex-shrink: 0;
}

.console-toggle {
    color: var(--text-muted);
    font-size: 12px;
    transition: transform 0.2s ease;
}

.console-body {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.console-output {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    line-height: 1.6;
    color: var(--text-secondary);
    background: var(--bg-void);
    max-height: calc(50vh - 44px);
}

.log-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.log-line.log-error {
    color: #ff5555;
}

.log-line.log-warn {
    color: #f0c040;
}