/* BAİBÜ Login Sayfası - Modern CSS */
/* form.php ile uyumlu modern tasarım */

:root {
    /* Ana Renkler - form.php ile aynı */
    --primary-color: #4A90E2;
    --primary-hover: #357ABD;
    --success-color: #27AE60;
    --danger-color: #E74C3C;
    --warning-color: #F39C12;
    
    /* Beyaz Tonlar */
    --white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-lighter: #F2F4F6;
    --text-dark: #2C3E50;
    --text-medium: #5A6C7D;
    --text-light: #95A5A6;
    --border-color: #E0E6ED;
    
    /* Gölgeler */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    /* Animasyonlar */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 50%, #90CAF9 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

/* Dekoratif Arka Plan Şekilleri */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    opacity: 0.1;
    pointer-events: none;
}

body::before {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -200px;
    right: -200px;
    animation: float 20s ease-in-out infinite;
}

body::after {
    width: 300px;
    height: 300px;
    background: var(--primary-hover);
    bottom: -150px;
    left: -150px;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, 50px) scale(1.1);
    }
}

/* Login Container */
.login-container {
    max-width: 480px;
    width: 100%;
    animation: fadeIn 0.6s ease-out;
    position: relative;
    z-index: 1;
}

/* Login Card */
.login-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* Login Header */
.login-header {
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
    padding: 50px 30px 40px;
    text-align: center;
    position: relative;
}

.login-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--white);
    font-size: 2.5rem;
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.4);
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(74, 144, 226, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 15px 40px rgba(74, 144, 226, 0.5);
    }
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-medium);
    font-size: 1.05rem;
    font-weight: 500;
}

/* Login Body */
.login-body {
    padding: 40px 35px;
}

/* Alert */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideDown 0.4s ease-out;
}

.alert-error {
    background: linear-gradient(135deg, #FADBD8, #F5B7B1);
    color: var(--danger-color);
    border: 2px solid var(--danger-color);
    border-left-width: 4px;
}

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

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

/* Form Group */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-dark);
}

.form-group label i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Input Fields */
.form-group input {
    width: 100%;
    padding: 15px 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-dark);
    background: var(--white);
    transition: var(--transition);
}

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

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

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.1);
    background: #FAFBFC;
}

/* reCAPTCHA Container */
.form-group .g-recaptcha {
    display: inline-block;
    transform-origin: 0 0;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.5);
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

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

.btn-submit i {
    font-size: 1.1rem;
}

/* Back Link */
.back-link {
    text-align: center;
    margin-top: 30px;
    padding-top: 25px;
    border-top: 2px solid var(--bg-light);
}

.back-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}

.back-link a:hover {
    background: var(--bg-light);
    gap: 14px;
    color: var(--primary-hover);
}

.back-link a i {
    font-size: 1rem;
    transition: var(--transition);
}

.back-link a:hover i {
    transform: translateX(-3px);
}

/* Animasyonlar */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .login-container {
        max-width: 100%;
    }
    
    .login-header {
        padding: 40px 25px 30px;
    }
    
    .login-icon {
        width: 75px;
        height: 75px;
        font-size: 2rem;
        margin-bottom: 20px;
    }
    
    .login-header h1 {
        font-size: 1.6rem;
    }
    
    .login-header p {
        font-size: 0.95rem;
    }
    
    .login-body {
        padding: 30px 25px;
    }
    
    .form-group input {
        padding: 13px 16px;
    }
    
    .btn-submit {
        padding: 14px 28px;
        font-size: 1rem;
    }
    
    /* reCAPTCHA responsive */
    .form-group .g-recaptcha {
        transform: scale(0.9);
        transform-origin: 0 0;
    }
}

@media (max-width: 480px) {
    .login-header h1 {
        font-size: 1.4rem;
    }
    
    .login-icon {
        width: 65px;
        height: 65px;
        font-size: 1.8rem;
    }
    
    .login-body {
        padding: 25px 20px;
    }
    
    /* reCAPTCHA daha küçük */
    .form-group .g-recaptcha {
        transform: scale(0.85);
    }
}

/* Loading State */
.btn-submit.loading {
    pointer-events: none;
    opacity: 0.7;
    position: relative;
}

.btn-submit.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Focus Visible Support */
input:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-medium);
}