/* Base Styles */
:root {
    --primary-color: #003366;
    --secondary-color: #ffffff;
    --accent-color: #f8b400;
    --light-gray: #f5f5f5;
    --dark-gray: #333333;
    --text-color: #444444;
    --border-color: #e0e0e0;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --white: #ffffff;
    --primary-dark: #002244;
    --primary-light: #004488;
    --text-light: #666666;
    --light-bg: #f9f9f9;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    color: var(--text-color);
    background-color: #e0f7fa;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/mtü-logo.png');
    background-repeat: repeat;
    background-size: 120px;
    background-position: center;
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* HEADER STİLLERİ - TAMAMEN YENİLENMİŞ */
.main-header {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 1rem 2rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "left center right";
    align-items: center;
    box-shadow: var(--box-shadow);
    width: 100%;
    z-index: 1000;
    gap: 1rem;
}

.header-left {
    grid-area: left;
    display: flex;
    align-items: center;
    justify-self: start;
}

.header-center {
    grid-area: center;
    text-align: center;
    min-width: 0;
}

.header-right {
    grid-area: right;
    display: flex;
    align-items: center;
    justify-self: end;
}

.university-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--secondary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.system-title {
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo {
    height: 60px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

/* Main Content - Login Page */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-page-container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
}

.login-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-title {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.login-subtitle {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Login Form */
.login-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-color);
}

.input-with-icon {
    position: relative;
}

.input-with-icon i.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1rem;
    z-index: 2;
}

.form-input {
    width: 100%;
    padding: 0.85rem 1rem 0.85rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 147, 0.1);
    outline: none;
}

/* Password Container - Güncellenmiş */
.password-container {
    position: relative;
}

.password-input {
    padding-right: 3.5rem !important;
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
    z-index: 3;
}

.toggle-password:hover {
    background-color: var(--light-gray);
    color: var(--primary-color);
}

/* Form options */
.form-options {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1.75rem;
    font-size: 0.9rem;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.forgot-password:hover {
    text-decoration: underline;
    color: var(--primary-dark);
    background-color: rgba(0, 82, 147, 0.05);
}

.login-btn {
    width: 100%;
    padding: 0.9rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.login-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 51, 102, 0.2);
}

.btn-icon {
    transition: var(--transition);
}

.login-btn:hover .btn-icon {
    transform: translateX(3px);
}

/* Info Card */
.info-card {
    background: linear-gradient(135deg, var(--light-bg), #f0f4f8);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
}

.info-icon {
    font-size: 1.75rem;
    color: var(--primary-color);
    flex: 0 0 auto;
    margin-top: 0.25rem;
}

.info-content {
    flex: 1;
}

.info-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--primary-dark);
    font-weight: 600;
}

.info-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* FOOTER STİLLERİ */
.footer {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    padding: 2rem 5% 1.5rem;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 1.5rem;
}

.footer-section {
    max-width: 300px;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section h3 i {
    font-size: 1rem;
}

.social-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-links a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0;
    font-size: 0.9rem;
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.social-links i {
    font-size: 0.9rem;
    width: 1rem;
    text-align: center;
}

.social-custom-icon {
    width: 20px;
    height: 20px;
    vertical-align: middle;
    margin-right: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    font-size: 0.8rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.8;
}

.footer-line {
    margin: 0;
}

.top-line {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.footer-logo {
    height: 16px;
    vertical-align: middle;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .main-header {
        flex-direction: row;
        gap: 0.75rem;
        text-align: center;
        padding: 0.75rem 1rem;
    }
    
    .header-center {
        padding: 0;
    }
    
    .university-title {
        font-size: 1rem;
        line-height: 1.2;
    }
    
    .system-title {
        font-size: 0.75rem;
        line-height: 1.2;
    }
    
    .logo {
        height: 40px;
    }
    
    .main-content {
        padding: 1.5rem 1rem;
    }
    
    .login-card {
        padding: 2rem 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-section {
        max-width: 100%;
    }
    
    .social-links a {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .main-header {
        padding: 0.5rem;
        gap: 0.5rem;
    }
    
    .university-title {
        font-size: 0.85rem;
    }
    
    .system-title {
        font-size: 0.7rem;
    }
    
    .logo {
        height: 35px;
    }
    
    .login-card {
        padding: 1.5rem 1rem;
        margin: 0.5rem;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .form-input {
        padding: 0.75rem 1rem 0.75rem 2.75rem;
    }
    
    .password-input {
        padding-right: 3rem !important;
    }
    
    .toggle-password {
        right: 0.5rem;
        padding: 0.4rem;
    }
    
    .info-card {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .info-icon {
        margin-bottom: 0;
    }
    
    .footer-line {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .university-title {
        font-size: 0.75rem;
    }
    
    .system-title {
        font-size: 0.65rem;
    }
    
    .logo {
        height: 30px;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}