/**
 * Schaefer Energiesysteme - Formular Styles
 * Design: Schaefer CI (Blau #254287, Rot #E31E24)
 * Mobile-first approach
 */

:root {
    --primary-color: #254287;
    --accent-color: #E31E24;
    --primary-dark: #1a3266;
    --primary-light: #3d5ba8;
    --success: #2E7D32;
    --error: #D32F2F;
    --warning: #F9A825;
    --text-color: #2A2B2A;
    --text-secondary: #757575;
    --bg-color: #FFFFFF;
    --card-bg: #F8F9FA;
    --border-color: #DEE2E6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem 0.75rem 3rem;
}

.form-header {
    padding: 1.5rem 1rem;
    margin-bottom: 1rem;
}

.form-logo {
    max-height: 60px;
    width: auto;
}

.form-header h1 {
    color: var(--primary-color);
    font-weight: 700;
    margin: 0;
}

.intro-text {
    background: var(--card-bg);
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.form-block {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.form-block .card-header {
    background: var(--primary-color) !important;
    color: white;
    padding: 1rem 1.25rem;
    border: none;
}

.form-block .card-header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.form-block .card-body {
    padding: 1.25rem;
    background: white;
}

.form-block .text-muted {
    color: var(--text-secondary) !important;
    font-size: 0.875rem;
}

.form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.375rem;
    display: block;
    font-size: 0.9rem;
}

.text-danger {
    color: var(--accent-color) !important;
}

.form-control,
.form-select {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 66, 135, 0.15);
    outline: none;
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--error);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
}

.invalid-feedback {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    margin-top: 0.125rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 66, 135, 0.15);
}

.input-group-text {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
}

.btn {
    border-radius: 50px;
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 66, 135, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-outline-danger {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-outline-danger:hover {
    background: var(--accent-color);
    color: white;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.05rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.submit-section {
    padding: 1rem 0;
}

.alert {
    border-radius: 10px;
    padding: 1rem 1.25rem;
    border: none;
    font-weight: 500;
}

.alert-success {
    background: #E8F5E9;
    color: var(--success);
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: #FFEBEE;
    color: var(--error);
    border-left: 4px solid var(--error);
}

.alert-info {
    background: #E3F2FD;
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

.success-message {
    text-align: center;
    padding: 2rem 1rem;
}

.success-message h2 {
    margin-bottom: 0.5rem;
}

.form-footer {
    padding: 1.5rem 1rem;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.form-footer a:hover {
    text-decoration: underline;
}

.form-footer small {
    color: var(--text-secondary);
}

.hidden-honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
    height: 0;
    width: 0;
}

.repeatable-group {
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--card-bg);
}

.repeatable-item {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bordered-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    background: white;
}

.border.rounded {
    border-color: var(--border-color) !important;
}

@media (max-width: 576px) {
    .container {
        padding: 0.75rem 0.5rem 2rem;
    }

    .form-block .card-body {
        padding: 1rem 0.75rem;
    }

    .form-header {
        padding: 1rem 0.5rem;
    }

    .form-header h1 {
        font-size: 1.25rem;
    }

    .btn-lg {
        width: 100%;
        justify-content: center;
    }
}

@media (min-width: 768px) {
    .container {
        padding: 2rem 1rem 3rem;
    }
}

@media (min-width: 992px) {
    .repeatable-group .row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .repeatable-group .row > div {
        padding-left: 0;
        padding-right: 0;
    }

    .repeatable-group .row .mb-3 {
        margin-bottom: 0 !important;
    }

    .repeatable-group .row .form-label {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
    }
}

.repeatable-group {
    background: var(--card-bg);
}

.repeatable-item {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
}

.repeatable-item:last-child {
    margin-bottom: 0;
}

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

@media (min-width: 768px) {
    .repeatable-item .heating-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}