/* ========================================
   GLOBAL STYLES & RESET
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Logo renklerinden alınan palet */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #f97316;
    --secondary-dark: #ea580c;
    --accent-color: #10b981;
    --error-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   CONTAINER & LAYOUT
======================================== */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   HEADER
======================================== */
.header {
    text-align: center;
    margin-bottom: 40px;
    animation: slideDown 0.8s ease-out;
}

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

.logo-container {
    background: var(--bg-white);
    padding: 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    margin-bottom: 30px;
    display: inline-block;
    transition: var(--transition);
}

.logo-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 35px -5px rgba(0, 0, 0, 0.15);
}

.logo {
    max-width: 200px;
    height: auto;
    display: block;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

/* ========================================
   MAIN CONTENT
======================================== */
.main-content {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 40px;
    margin-bottom: 30px;
}

/* ========================================
   FORM STYLES
======================================== */
.form {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.form-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 2px solid var(--bg-light);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 30px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 28px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.required {
    color: var(--error-color);
    font-weight: 600;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: var(--bg-white);
    color: var(--text-primary);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-input:hover {
    border-color: var(--primary-light);
}

.form-input::placeholder {
    color: var(--text-light);
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.info-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-style: italic;
}

/* ========================================
   RADIO BUTTONS
======================================== */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.radio-label {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    background: var(--bg-white);
}

.radio-label:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.03);
    transform: translateX(5px);
}

.radio-input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    margin-right: 15px;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.radio-input:checked ~ .radio-custom {
    border-color: var(--primary-color);
    background: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.radio-input:checked ~ .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-white);
}

.radio-input:checked ~ .radio-text {
    color: var(--primary-color);
    font-weight: 500;
}

.radio-label:has(.radio-input:checked) {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    box-shadow: var(--shadow-md);
}

.radio-text {
    font-size: 1rem;
    color: var(--text-primary);
    transition: var(--transition);
}

/* ========================================
   BUTTONS
======================================== */
.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 35px;
}

.btn {
    flex: 1;
    padding: 16px 28px;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #1e3a8a);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-icon {
    flex-shrink: 0;
}

/* ========================================
   SUCCESS MESSAGE
======================================== */
.success-message {
    display: none;
    text-align: center;
    padding: 50px 30px;
    animation: scaleIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.success-message.show {
    display: block;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.success-icon {
    margin: 0 auto 20px;
    animation: checkmark 0.8s ease-in-out;
}

@keyframes checkmark {
    0% {
        transform: scale(0) rotate(45deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.2) rotate(-10deg);
        opacity: 1;
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

.success-message h3 {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.success-message p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .main-content {
        padding: 25px 20px;
    }

    .main-title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .logo {
        max-width: 150px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .radio-text {
        font-size: 0.9rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.6rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .main-content {
        padding: 20px 15px;
    }

    .logo-container {
        padding: 20px;
    }

    .logo {
        max-width: 120px;
    }

    .radio-label {
        padding: 12px 15px;
    }

    .radio-text {
        font-size: 0.85rem;
    }
}

/* ========================================
   ACCESSIBILITY
======================================== */
.form-input:focus-visible,
.btn:focus-visible,
.radio-label:focus-within {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   PRINT STYLES
======================================== */
@media print {
    body {
        background: white;
    }

    .btn-secondary,
    .footer {
        display: none;
    }

    .main-content {
        box-shadow: none;
        border: 1px solid #000;
    }
}