/* Reset und Basis-Stile */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #059669;
    --error-color: #dc2626;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --background: #ffffff;
    --background-secondary: #f9fafb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 0.5rem;
    --transition: all 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-secondary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h2 {
    line-height: 1.3em;
}
.container {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    text-align: center;
    padding: 2rem 0;
}

.logo {
    height: 15px;
    width: auto;
    margin-bottom: 1.5rem;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.header h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.intro {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 100%;
    margin: 0 auto;
    margin-top: 1rem;
    line-height: 1.4;
    padding: 0 1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-bottom: 2rem;
}

/* Messages */
.message {
    display: flex;
    align-items: flex-start;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    animation: slideIn 0.3s ease-out;
    transition: transform 0.2s ease;
}

.message:hover {
    transform: translateY(-2px);
}

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

.success-message {
    background-color: #fffffffd;
    color: #111827;
}

.error-message {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--error-color);
}

.message-icon {
    width: 24px;
    height: 24px;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.message-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.message-content h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 1rem;
}

.message-content p {
    font-size: 1rem;
    line-height: 1.5;
    margin-top: 0!important;
}

#countdown {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.125rem;
}

/* Success page specific styles */
.success-only .container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding-top: 2rem;
    padding-bottom: 2rem;
}

/* Mobile anpassung für Success-Seite */
@media (max-width: 640px) {
    .success-only .container {
        min-height: auto;
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
}

.success-only .main-content {
    margin: 0;
}

.success-only .message {
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.success-only .footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--background-secondary);
}

@media (max-width: 640px) {
    .success-only .footer {
        position: relative;
        margin-top: 2rem;
    }
}

/* Redirect Button */
.redirect-button {
    display: inline-block;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    padding: 0.875rem 1.75rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.redirect-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.redirect-button:active {
    transform: translateY(0);
}

.redirect-button span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Form Styles */
.donation-form {
    background: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.form-section {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-child {
    border-bottom: none;
}

.form-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.hint {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 0.813rem;
}

.required {
    color: var(--error-color);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--background);
    transition: var(--transition);
    font-family: inherit;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Input mit Prefix */
.input-with-prefix {
    display: flex;
    align-items: center;
    position: relative;
}

.input-prefix {
    position: absolute;
    left: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.input-with-prefix input {
    padding-left: 2rem;
}

/* Checkbox Styles */
.consent-group {
    margin-bottom: 2rem;
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    position: relative;
    user-select: none;
}

.checkbox-container input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    background-color: var(--background);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 0.75rem;
    transition: var(--transition);
    position: relative;
}

.checkbox-container:hover .checkmark {
    border-color: var(--primary-color);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.consent-text {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary);
}

/* Submit Button */
.submit-button {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.submit-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.submit-button:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

.button-icon {
    width: 20px;
    height: 20px;
}

.button-text {
    font-size: 1rem;
}

/* Footer */
.footer {
    margin-top: auto;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-text {
    font-size: 0.813rem;
    color: var(--text-secondary);
}

/* Mobile Optimierungen */
@media (max-width: 640px) {
    .container {
        padding: 0.5rem;
    }
    
    .header {
        padding: 1.5rem 0;
    }
    
    .intro {
        padding: 0;
    }
    
    .form-section {
        padding: 1.25rem;
    }
    
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    textarea {
        font-size: 16px; /* Verhindert Zoom auf iOS */
    }
    
    .footer-links {
        gap: 1.5rem;
    }
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background-color: white;
    }
    
    .donation-form {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
    
    .submit-button,
    .footer {
        display: none;
    }
}