/* ───────────── Reset & Base ───────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #0b0e18;
    --bg-card: #111627;
    --bg-card-alt: #161c30;
    --surface: #1a2140;
    --border: #252d4a;
    --border-focus: #6366f1;
    --text: #e2e8f0;
    --text-muted: #8892b0;
    --text-dim: #55607a;
    --primary: #6366f1;
    --primary-hover: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.25);
    --success: #22c55e;
    --danger: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: 0.2s ease;
}

html {
    font-size: 15px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ───────────── Auth / Login ───────────── */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.08), transparent 70%),
                radial-gradient(ellipse at 70% 80%, rgba(34, 197, 94, 0.06), transparent 70%),
                var(--bg);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem 2rem;
    box-shadow: var(--shadow);
    animation: fadeUp 0.5s ease;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: #fff;
    margin-bottom: 1rem;
}

.auth-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.125rem;
}

.auth-error {
    text-align: center;
    color: var(--danger);
    font-size: 0.825rem;
    margin-top: 1rem;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.auth-error.visible {
    opacity: 1;
    pointer-events: auto;
}

/* ───────────── Input Groups ───────────── */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.input-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.01em;
}

.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 12px;
    color: var(--text-dim);
    pointer-events: none;
    transition: color var(--transition);
}

.toggle-pwd {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-xs);
    display: flex;
    transition: color var(--transition);
}

.toggle-pwd:hover {
    color: var(--text);
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.7rem 0.9rem 0.7rem 2.4rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font);
    outline: none;
    transition: border var(--transition), box-shadow var(--transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

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

.input-with-btn {
    display: flex;
    gap: 0.5rem;
}

.input-with-btn input {
    flex: 1;
    padding-left: 0.9rem;
}

/* ───────────── Buttons ───────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4f46e5);
    color: #fff;
    box-shadow: 0 2px 12px var(--primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary));
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--text-dim);
    color: var(--text);
    background: var(--surface);
}

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

.btn-ghost:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.08);
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.btn-full {
    width: 100%;
    padding: 0.75rem 1.25rem;
}

/* ───────────── Divider ───────────── */
.divider {
    height: 1px;
    background: var(--border);
    margin: 0.75rem 0;
}

/* ───────────── Checkboxes ───────────── */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    max-height: 340px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.checkbox-group::-webkit-scrollbar {
    width: 4px;
}

.checkbox-group::-webkit-scrollbar-track {
    background: transparent;
}

.checkbox-group::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 0.625rem;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: background var(--transition);
}

.checkbox-item:hover {
    background: var(--bg-card-alt);
}

.checkbox-item input[type="checkbox"] {
    display: none;
}

.check-box {
    width: 18px;
    height: 18px;
    border: 2px solid var(--text-dim);
    border-radius: 4px;
    flex-shrink: 0;
    position: relative;
    transition: background var(--transition), border var(--transition);
}

.checkbox-item input:checked + .check-box {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-item input:checked + .check-box::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 6px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.check-label {
    font-size: 0.825rem;
    color: var(--text);
    font-weight: 400;
}

/* ───────────── Labels hints ───────────── */
.label-hint {
    color: var(--text-dim);
    font-weight: 400;
    font-size: 0.75rem;
}

/* ───────────── Dashboard ───────────── */
.dashboard {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.topbar-left h2 {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.logo-icon-sm {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: #fff;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-hover);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* ───────────── Grid ───────────── */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    padding: 1.25rem;
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* ───────────── Cards ───────────── */
.form-card,
.output-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.card-header {
    margin-bottom: 1rem;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-header p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.125rem;
}

.form-card form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.action-bar {
    display: flex;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 1rem;
}

.action-bar .btn {
    flex: 1;
}

/* ───────────── Output ───────────── */
.output-card {
    display: flex;
    flex-direction: column;
}

.output-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.output-badge {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-dim);
    border: 1px solid var(--border);
}

.output-area {
    flex: 1;
    background: var(--bg-card-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    overflow-y: auto;
    min-height: 300px;
    max-height: 600px;
}

.output-area.empty .placeholder {
    display: block;
    color: var(--text-dim);
    font-family: var(--font);
    font-size: 0.85rem;
}

.output-area .placeholder {
    display: none;
}

/* ───────────── Animations ───────────── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ───────────── Responsive ───────────── */
@media (max-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .topbar {
        padding: 0.6rem 1rem;
    }

    .dashboard-grid {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: 1.75rem 1.25rem;
    }
}

/* ───────────── Scrollbar for output ───────────── */
.output-area::-webkit-scrollbar {
    width: 4px;
}
.output-area::-webkit-scrollbar-track {
    background: transparent;
}
.output-area::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}