/* Color scheme inspired by pmsolarenergie.at */
:root {
    --primary-yellow: #fab84e;
    --primary-gold: #f9da23;
    --dark-gray: #4e4d4d;
    --medium-gray: #676767;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --success: #4caf50;
    --error: #f44336;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--primary-gold) 100%);
    color: var(--white);
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
}

.main-content {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

.info-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.info-section h2 {
    color: var(--dark-gray);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.info-section p {
    color: var(--medium-gray);
    font-size: 1.05rem;
}

.form-container {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.field-note {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin: -0.5rem 0 0.5rem 0;
    font-style: italic;
}

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

.form-group label {
    color: var(--dark-gray);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-yellow);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    transition: all 0.3s ease;
    background: var(--white);
    position: relative;
}

.checkbox-label:hover {
    border-color: var(--primary-yellow);
    background: #fffbf0;
}

.checkbox-label input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    margin-right: 0.75rem;
    cursor: pointer;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    background: var(--white);
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:hover {
    border-color: var(--primary-yellow);
}

.checkbox-label input[type="checkbox"]:checked {
    background: var(--primary-yellow);
    border-color: var(--primary-yellow);
}

.checkbox-label input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 16px;
    font-weight: bold;
}

.checkbox-label span {
    font-size: 1rem;
    color: var(--dark-gray);
    user-select: none;
}

.checkbox-label input[type="checkbox"]:checked + span {
    font-weight: 600;
    color: var(--dark-gray);
}

.checkbox-label:has(input[type="checkbox"]:checked) {
    border-color: var(--primary-yellow);
    background: #fffbf0;
}

.submit-btn {
    background: var(--dark-gray);
    color: var(--white);
    padding: 1rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.submit-btn:hover {
    background: var(--primary-yellow);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

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

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.message {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    display: none;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.message.show {
    display: block;
}

.message.success {
    background-color: var(--success);
    color: var(--white);
}

.message.error {
    background-color: var(--error);
    color: var(--white);
}

.footer {
    background: var(--dark-gray);
    color: var(--white);
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
}

.footer p {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Thank You Page */
.thank-you-container {
    background: var(--white);
    padding: 4rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.thank-you-icon {
    width: 100px;
    height: 100px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--white);
    margin: 0 auto 2rem;
    font-weight: bold;
}

.thank-you-container h1 {
    color: var(--dark-gray);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.thank-you-container p {
    color: var(--medium-gray);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.thank-you-subtext {
    font-size: 1rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .info-section,
    .form-container {
        padding: 1.5rem;
    }

    .info-section h2 {
        font-size: 1.5rem;
    }

    /* Prevent auto-zoom on iOS */
    .form-group input,
    .form-group textarea {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 2rem 1rem;
    }

    .header h1 {
        font-size: 1.75rem;
        line-height: 1.2;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .main-content {
        padding: 1rem 0.75rem;
    }

    .info-section,
    .form-container {
        padding: 1.25rem;
        border-radius: 6px;
    }

    .info-section h2 {
        font-size: 1.35rem;
    }

    .info-section p {
        font-size: 1rem;
    }

    .contact-form {
        gap: 1.25rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .checkbox-label {
        padding: 0.65rem;
    }

    .checkbox-label input[type="checkbox"] {
        width: 22px;
        height: 22px;
    }

    .checkbox-label input[type="checkbox"]:checked::after {
        font-size: 14px;
    }

    .checkbox-label span {
        font-size: 0.95rem;
    }

    .submit-btn {
        padding: 1rem 1.5rem;
        font-size: 1.05rem;
        width: 100%;
        min-height: 48px;
    }

    .message {
        padding: 1.25rem 1rem;
        font-size: 1rem;
    }

    .thank-you-container {
        padding: 3rem 1.5rem;
    }

    .thank-you-icon {
        width: 80px;
        height: 80px;
        font-size: 48px;
    }

    .thank-you-container h1 {
        font-size: 1.5rem;
    }

    .thank-you-container p {
        font-size: 1rem;
    }

    .footer {
        padding: 1.25rem;
    }

    .footer p {
        font-size: 0.85rem;
    }
}

@media (max-width: 375px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .info-section,
    .form-container {
        padding: 1rem;
    }

    .info-section h2 {
        font-size: 1.25rem;
    }

    .info-section p {
        font-size: 0.95rem;
    }
}