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

:root {
    --primary-color: #c00000;
    --secondary-color: #000;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --border-color: #ddd;
    --success-color: #28a745;
    --error-color: #dc3545;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(192, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: #fff;
    box-shadow: var(--shadow);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    max-height: 60px;
    width: auto;
    object-fit: contain;
}

/* Main Content */
.main-content {
    padding: 60px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
}

/* Form Container */
.form-container {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 50px 40px;
    max-width: 550px;
    width: 100%;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-title {
    text-align: center;
    color: var(--secondary-color);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.form-subtitle {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 40px;
}

/* Form Styles */
.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
    color: var(--text-color);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(192, 0, 0, 0.1);
}

.form-input::placeholder {
    color: #999;
}

.form-input.error {
    border-color: var(--error-color);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
    line-height: 1.5;
}

/* Checkbox Styles */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 30px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 10px;
    transition: background 0.3s ease;
}

.checkbox-group:hover {
    background: #ebebeb;
}

.checkbox-input {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--primary-color);
    flex-shrink: 0;
}

.checkbox-label {
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color);
    cursor: pointer;
    user-select: none;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.checkbox-label a:hover {
    color: #a00000;
    text-decoration: underline;
}

/* Button Styles */
.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(192, 0, 0, 0.3);
    font-family: inherit;
}

.submit-btn:hover {
    background: #a00000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

/* Message Styles */
.message {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    font-size: 14px;
    display: none;
    animation: slideDown 0.3s ease-out;
}

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

.message.show {
    display: block;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.message {
    position: relative;
    padding-right: 40px;
}

.message-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: transparent;
    border: none;
    color: inherit;
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
}

.message-close:hover {
    opacity: 0.7;
}

/* Footer Styles */
.footer {
    background: var(--secondary-color);
    color: #fff;
    padding: 30px 0;
    text-align: center;
    margin-top: auto;
}

.footer-text {
    margin-bottom: 10px;
}

.kvkk-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    border-bottom: 1px solid transparent;
}

.kvkk-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.copyright {
    font-size: 12px;
    color: #999;
    margin-top: 10px;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .form-container {
        padding: 35px 25px;
        margin: 20px;
    }

    .form-title {
        font-size: 26px;
    }

    .form-subtitle {
        font-size: 14px;
    }

    .main-content {
        padding: 30px 10px;
    }

    .logo {
        max-height: 50px;
    }
}

@media (max-width: 480px) {
    .form-container {
        padding: 30px 20px;
    }

    .form-title {
        font-size: 22px;
    }

    .submit-btn {
        font-size: 16px;
        padding: 14px;
    }
}