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

:root {
    --primary-color: #1f1f1f;
    --primary-light: #333333;
    --primary-dark: #000000;
    --accent-color: #e1bee7;
}

body {
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.home-header {
    background: var(--primary-color);
    padding: 10px 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: 40px;
}

.school-logo {
    height: 45px;
    width: auto;
}

.home-button {
    display: inline-block;
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-weight: 500;
    margin-right: 40px;
}

.home-button:hover {
    background-color: var(--primary-light);
}

h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 10px;
    text-align: center;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 20px;
    margin: 100px auto 20px auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 24px;
}

.search-box {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.input-group {
    margin-bottom: 15px;
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

input:focus {
    border-color: var(--primary-color);
}

button {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

button:hover {
    background: var(--primary-light);
}

.result-box {
    margin-top: 20px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: none;
    width: 100%;
}

.result-box.active {
    display: block;
}

.certificate-preview {
    margin-top: 20px;
    padding: 15px;
    background: #f8f8f8;
    border-radius: 8px;
    text-align: center;
}

.certificate-preview h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.certificate-image {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.certificate-image:hover {
    transform: scale(1.02);
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.button-group button {
    flex: 1;
}

.secondary-button {
    background: #fff;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.secondary-button:hover {
    background: #f0f0f0;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        padding: 10px 0;
    }

    .header-left {
        margin-left: 20px;
    }

    .school-logo {
        height: 40px;
    }

    .home-button {
        margin-right: 20px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    .container {
        margin-top: 100px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 22px;
    }

    h2 {
        font-size: 18px;
    }
    
    .button-group {
        flex-direction: column;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 800px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.modal-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.close-button {
    position: absolute;
    right: 20px;
    top: 20px;
    color: white;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2001;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
}

.close-button:hover {
    background: rgba(0, 0, 0, 0.8);
}

.download-button {
    margin-top: 20px;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.download-button:hover {
    background-color: var(--primary-light);
}

/* Sertifika görüntüsü için pointer cursor */
.certificate-image {
    cursor: pointer;
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        padding: 10px;
    }

    .close-button {
        right: 10px;
        top: 10px;
        font-size: 30px;
    }

    .download-button {
        padding: 10px 20px;
        font-size: 14px;
    }
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo-link:hover {
    opacity: 0.8;
}

.school-logo {
    height: 45px;
    width: auto;
    cursor: pointer;
}

/* Footer Styles */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 40px 0 0 0;
    margin-top: 50px;
    width: 100%;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h3 {
    font-size: 16px;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.6;
    color: #ccc;
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: #999;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-section {
        margin-bottom: 30px;
    }
}