/* Modern Tasarım Stilleri */
:root {
    --primary-blue: #008ae8;
    --light-blue: #01a1ec;
    --medium-blue: #60cbf5;
    --pale-blue: #ace5fa;
    --very-pale-blue: #e3f7fd;
    --dark-blue: #0066b3;
    --text-dark: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, var(--very-pale-blue) 0%, var(--pale-blue) 50%, var(--white) 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: white;
    animation: fadeInUp 0.8s ease;
}

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

.loading-logo img {
    width: 120px;
    height: auto;
    margin-bottom: 25px;
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.2));
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.loading-text h2 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.loading-text p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: white;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo-container {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    width: 65px;
    height: auto;
    margin-right: 18px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    transition: var(--transition);
}

.logo:hover {
    transform: rotate(-5deg) scale(1.05);
}

.title-container {
    display: flex;
    flex-direction: column;
}

.company-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 500;
}

/* Main Container */
.container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--medium-blue) 0%, transparent 70%);
    opacity: 0.1;
    border-radius: 50%;
    z-index: 0;
}

.container::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, var(--light-blue) 0%, transparent 70%);
    opacity: 0.1;
    border-radius: 50%;
    z-index: 0;
}

.form-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 3rem;
    width: 100%;
    max-width: 500px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
}

.form-container:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.form-container h1 {
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: 2.5rem;
    font-weight: 800;
    font-size: 2rem;
    position: relative;
    padding-bottom: 20px;
    letter-spacing: -0.5px;
}

.form-container h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, var(--light-blue), var(--primary-blue));
    border-radius: 2px;
}

/* Form Elements */
.input-group {
    position: relative;
    margin-bottom: 2rem;
}

.input-group input {
    width: 100%;
    padding: 1.2rem 1.2rem 1.2rem 1.2rem;
    border: 2px solid #e8f4fd;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--very-pale-blue);
    color: var(--text-dark);
    font-weight: 500;
}

.input-group input:focus {
    border-color: var(--medium-blue);
    box-shadow: 0 0 0 4px rgba(96, 203, 245, 0.2);
    outline: none;
    background-color: var(--white);
    transform: translateY(-2px);
}
/* Select elementi için stiller */
.input-group select {
    width: 100%;
    padding: 1.2rem 1.2rem 1.2rem 1.2rem;
    border: 2px solid #e8f4fd;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--very-pale-blue);
    color: var(--text-dark);
    font-weight: 500;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23008ae8' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.2rem center;
    background-size: 16px;
}

.input-group select:focus {
    border-color: var(--medium-blue);
    box-shadow: 0 0 0 4px rgba(96, 203, 245, 0.2);
    outline: none;
    background-color: var(--white);
    transform: translateY(-2px);
}

.input-group select:valid {
    padding-top: 1.8rem;
    padding-bottom: 0.6rem;
}

/* Select için özel label stili */
.input-group select:focus + label,
.input-group select:valid + label {
    top: 0.6rem;
    left: 1.2rem;
    font-size: 0.8rem;
    color: var(--medium-blue);
    font-weight: 700;
}

/* Select için boş değer stili */
.input-group select:invalid {
    color: var(--text-light);
}

.input-group input:valid,
.input-group input:focus {
    padding-top: 1.8rem;
    padding-bottom: 0.6rem;
}

.input-group label {
    position: absolute;
    top: 1.2rem;
    left: 1.2rem;
    color: var(--text-light);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition);
    font-weight: 500;
}

.input-group input:focus + label,
.input-group input:valid + label {
    top: 0.6rem;
    left: 1.2rem;
    font-size: 0.8rem;
    color: var(--medium-blue);
    font-weight: 700;
}

.error-message {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 8px;
    display: block;
    min-height: 1.2em;
    font-weight: 500;
    padding-left: 5px;
}

/* Submit Button */
.submit-btn {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1.2rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(1, 161, 236, 0.3);
    letter-spacing: 0.5px;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(1, 161, 236, 0.4);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(-1px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 4px 15px rgba(1, 161, 236, 0.2);
}

.btn-text {
    display: inline-block;
    transition: var(--transition);
}

.btn-loading {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .btn-loading {
    display: block;
}

/* Social Media */
.social-media {
    margin-top: 2.5rem;
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.social-media p {
    margin-bottom: 1.2rem;
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 600;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: white;
    font-size: 1.3rem;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.social-icon:hover::before {
    left: 100%;
}

.social-icon:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.twitter {
    background: linear-gradient(135deg, #1DA1F2, #0d8bd9);
}

.instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.facebook {
    background: linear-gradient(135deg, #3b5998, #2d4373);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    max-width: 500px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

@keyframes modalSlideUp {
    from { 
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(to right, var(--light-blue), var(--primary-blue));
}

.modal-icon {
    font-size: 5rem;
    color: #2ecc71;
    margin-bottom: 1.5rem;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

.modal-content h2 {
    color: var(--primary-blue);
    margin-bottom: 1.2rem;
    font-weight: 800;
    font-size: 2rem;
}

.modal-content p {
    margin-bottom: 2rem;
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1.1rem;
}

.modal-info {
    background: linear-gradient(135deg, var(--very-pale-blue) 0%, var(--pale-blue) 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
    border-left: 4px solid var(--medium-blue);
}

.modal-info p {
    margin-bottom: 0.8rem;
    color: var(--text-dark);
    font-weight: 600;
    display: flex;
    align-items: center;
}

.modal-info p:last-child {
    margin-bottom: 0;
}

.modal-info strong {
    color: var(--primary-blue);
    min-width: 100px;
    display: inline-block;
}

.modal-btn {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 6px 20px rgba(1, 161, 236, 0.3);
    letter-spacing: 0.5px;
}

.modal-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(1, 161, 236, 0.4);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: white;
    padding: 3rem 2rem;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
}

.contact-tab {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contact-tab h3 {
    margin-bottom: 1.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.contact-info p:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.contact-info i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 1.2rem;
    }
    
    .logo-container {
        justify-content: center;
        text-align: center;
    }
    
    .logo {
        width: 55px;
        margin-right: 12px;
    }
    
    .company-name {
        font-size: 1.3rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .container {
        padding: 2rem 1rem;
    }
    
    .form-container {
        padding: 2.5rem 2rem;
    }
    
    .form-container h1 {
        font-size: 1.7rem;
    }
    
    .contact-info {
        flex-direction: column;
        align-items: center;
        gap: 1.2rem;
    }
    
    .modal-content {
        padding: 2.5rem 2rem;
    }
    
    .social-icons {
        gap: 1rem;
    }
    
    .social-icon {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .loading-text h2 {
        font-size: 1.5rem;
    }
    
    .loading-text p {
        font-size: 1rem;
    }
    
    .form-container {
        padding: 2rem 1.5rem;
    }
    
    .form-container h1 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        padding: 2rem 1.5rem;
    }
    
    .modal-content h2 {
        font-size: 1.7rem;
    }
    
    .contact-info p {
        font-size: 0.9rem;
    }
}