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

:root {
    --bg: #0f1117;
    --card-bg: #1a1d27;
    --card-border: #2a2e3a;
    --text-primary: #e0e0e8;
    --text-secondary: #9a9db5;
    --accent: #4f8bff;
    --accent-hover: #5fa0ff;
    --success: #2ecc71;
    --success-bg: rgba(46, 204, 113, 0.12);
    --success-border: rgba(46, 204, 113, 0.4);
    --warning: #f39c12;
    --warning-bg: rgba(243, 156, 18, 0.12);
    --warning-border: rgba(243, 156, 18, 0.4);
    --danger: #e74c3c;
    --danger-bg: rgba(231, 76, 60, 0.12);
    --danger-border: rgba(231, 76, 60, 0.4);
    --input-bg: #151820;
    --input-border: #35394a;
    --input-focus: #4f8bff;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.2s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

/* ===== Header ===== */
header {
    text-align: center;
    margin-bottom: 32px;
    padding: 24px 0;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 6px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Section Headings ===== */
.form-section h2,
.stocks-section h2 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--card-border);
    color: var(--text-primary);
}

/* ===== Form ===== */
.form-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input {
    padding: 12px 14px;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(79, 139, 255, 0.2);
}

.form-group input::placeholder {
    color: #6b6f7f;
}

.form-group input[type="number"] {
    font-family: 'SF Mono', Monaco, Consolas, monospace;
}

/* ===== Form Buttons ===== */
.form-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
    min-width: 120px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 139, 255, 0.3);
}

.btn-secondary {
    background: #3a3f53;
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #4a4f63;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--card-border);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
    transform: translateY(-1px);
}

/* ===== Stocks Section ===== */
.stocks-section {
    margin-bottom: 24px;
}

.empty-message {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-style: italic;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
}

.stocks-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
    gap: 20px;
}

@media (max-width: 560px) {
    .stocks-container {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Stock Cards ===== */
.stock-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
}

.stock-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(79, 139, 255, 0.1);
}

.stock-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--card-border);
}

.stock-card-header h3 {
    font-size: 1.15rem;
    color: var(--accent);
}

.stock-isin {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'SF Mono', Monaco, monospace;
}

/* ===== Stock Data Grid ===== */
.data-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 16px;
}

.data-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.data-item .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.data-item .value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Calculations ===== */
.calculation-box {
    background: #151820;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 16px;
}

.calculation-box h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--card-border);
}

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

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

.calc-value {
    font-size: 0.95rem;
    font-weight: 600;
    font-family: 'SF Mono', Monaco, monospace;
}

/* ===== Status Colors ===== */
.status-good {
    color: var(--success);
}

.status-bad {
    color: var(--danger);
}

.status-neutral {
    color: var(--text-primary);
}

/* ===== Price Input for Live Calculation ===== */
.price-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.price-input-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    flex: 1;
}

.price-input-group input {
    flex: 2;
    padding: 10px 12px;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'SF Mono', Monaco, monospace;
}

.price-input-group input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(79, 139, 255, 0.2);
}

.live-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #151820;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
}

.live-result .live-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.live-result .live-value {
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'SF Mono', Monaco, monospace;
}

.warning-box {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    margin: 8px 0;
    color: var(--warning);
    font-size: 0.85rem;
}

.error-box {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    margin: 8px 0;
    color: var(--danger);
    font-size: 0.85rem;
}

/* ===== Card Actions ===== */
.card-actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--card-border);
}

.card-actions .btn {
    flex: 1;
    min-width: 0;
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

footer p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }

    header h1 {
        font-size: 1.6rem;
    }

    .form-section {
        padding: 18px;
    }

    .form-actions {
        flex-direction: column;
    }
}