:root {
    --primary: #1f6b81;
    --primary-dark: #165a6d;
    --secondary: #0f1312;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --success: #10b981;
    --error: #ef4444;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    padding: 20px;
}
@media screen and (max-width: 768px) {
body {
    padding: 0px;
}
  }

.container {
    max-width: 800px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    padding: 30px 0;
}

.header-content {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    text-align: left;
}

.logo {
    max-width: 64px;
    height: auto;
    margin-bottom: 0;
}

.header h1 {
    color: var(--secondary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.header p {
    color: var(--gray-500);
    font-size: 0.9rem;
    font-weight: 400;
}

/* Form Card */
.form-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 40px;
    margin-bottom: 30px;
    border: 1px solid var(--gray-200);
}

.form-card h2 {
    color: var(--secondary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--gray-200);
}

/* Form Groups */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-row.single {
    grid-template-columns: 1fr;
}

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

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group label .required {
    color: var(--error);
    margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    transition: all 0.2s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 107, 129, 0.15);
}

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

/* Radio Buttons */
.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 8px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 10px 20px;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.radio-label:hover {
    border-color: var(--primary);
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.radio-label input[type="radio"]:checked+span {
    color: var(--primary);
    font-weight: 500;
}

/* Checkbox */
.checkbox-group {
    margin-top: 30px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    accent-color: var(--primary);
    flex-shrink: 0;
}

.checkbox-label span {
    font-size: 0.9rem;
    color: var(--gray-700);
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 16px 32px;
    margin-top: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(31, 107, 129, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(31, 107, 129, 0.4);
}

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

/* Alert Messages */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-icon {
    font-size: 1.3rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--gray-500);
    font-size: 0.85rem;
}

.footer a {
    color: var(--primary);
    text-decoration: none;
}

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

/* TC Kimlik Feedback */
.tc-feedback {
    display: block;
    margin-top: 6px;
    font-size: 0.8rem;
}

.tc-feedback.tc-pending {
    color: var(--gray-500);
}

.tc-feedback.tc-valid {
    color: var(--success);
    font-weight: 500;
}

.tc-feedback.tc-invalid {
    color: var(--error);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .form-card {
        padding: 25px;
    }

    .header h1 {
        font-size: 1.4rem;
    }

    .radio-group {
        flex-direction: column;
        gap: 10px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .header h1 {
        font-size: 1.1rem;
    }
}

/* ==================== PAYMENT MODAL ==================== */
.payment-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.payment-modal-overlay.active {
    display: flex;
}

.payment-modal {
    background: var(--white);
    border-radius: 20px;
    max-width: 540px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.payment-modal-header {
    text-align: center;
    padding: 32px 32px 24px;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-bottom: 1px solid #6ee7b7;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: var(--success);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 16px;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.payment-modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #065f46;
    margin-bottom: 6px;
}

.payment-modal-header p {
    color: #047857;
    font-size: 0.95rem;
}

.payment-modal-body {
    padding: 24px 32px;
    overflow-y: auto;
    max-height: calc(90vh - 280px);
}

.payment-warning {
    display: flex;
    gap: 14px;
    padding: 16px;
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: 12px;
    margin-bottom: 20px;
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.payment-warning strong {
    display: block;
    color: #92400e;
    margin-bottom: 4px;
    font-size: 0.95rem;
}

.payment-warning p {
    color: #a16207;
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

.bank-info-card {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
}

.bank-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.bank-logo {
    width: 48px;
    height: auto;
    object-fit: contain;
}

.bank-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--secondary);
}

.bank-details {
    padding: 16px 20px;
}

.bank-detail-item {
    margin-bottom: 16px;
}

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

.bank-detail-item label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.bank-detail-item span {
    font-size: 0.9rem;
    color: var(--secondary);
    font-weight: 500;
}

.iban-container {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.iban-number {
    font-family: 'Courier New', monospace;
    font-size: 1rem !important;
    font-weight: 600 !important;
    letter-spacing: 1px;
    color: var(--primary) !important;
}

.copy-iban-btn {
    padding: 8px 14px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-iban-btn:hover {
    background: var(--primary-dark);
}

.copy-iban-btn.copied {
    background: var(--success);
}

.payment-note {
    padding: 14px 16px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
}

.payment-note p {
    font-size: 0.875rem;
    color: #1e40af;
    margin: 0;
}

.payment-modal-footer {
    padding: 20px 32px 28px;
    text-align: center;
}

.btn-close-modal {
    padding: 14px 40px;
    font-size: 1rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(31, 107, 129, 0.3);
}

.btn-close-modal:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(31, 107, 129, 0.4);
}

/* Payment Modal Responsive */
@media (max-width: 576px) {
    .payment-modal {
        border-radius: 16px;
    }

    .payment-modal-header {
        padding: 24px 20px;
    }

    .payment-modal-body {
        padding: 20px;
    }

    .payment-modal-footer {
        padding: 16px 20px 24px;
    }

    .success-icon {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
    }

    .payment-modal-header h2 {
        font-size: 1.25rem;
    }

    .iban-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .iban-number {
        font-size: 0.85rem !important;
    }

    .copy-iban-btn {
        width: 100%;
    }
}