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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    height: 100vh;
    overflow: hidden;
}


/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-content {
    text-align: center;
    color: white;
}

/* Spinner Animation */
.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.loading-subtext {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Dots Animation */
.dots {
    display: inline-block;
}

.dots span {
    animation: blink 1.4s infinite;
    animation-fill-mode: both;
}

.dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {
    0%, 80%, 100% {
      opacity: 0;
    }
    40% {
      opacity: 1;
    }
}

.login-container {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("/static/wwwroot/assets/img/anhtruong.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.background-image::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.login-card {
    position: relative;
    z-index: 2;
    background: white;
    border-radius: 8px;
    padding: 40px;
    padding-top: 0px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.logo-section {
    display: flex;
    justify-content: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.logo-text {
    text-align: left;
}

.uef-text {
    font-size: 24px;
    font-weight: bold;
    color: #dc143c;
    line-height: 1;
}

.university-text {
    font-size: 10px;
    color: #0066cc;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.login-title {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #f8f9fa;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.google-btn:hover {
    background: #f1f3f4;
    border-color: #ccc;
}

.divider {
    position: relative;
    text-align: center;
}

.divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e0e0e0;
    z-index: -1;
}

.divider span {
    background: white;
    padding: 0 15px;
    color: #666;
    font-size: 14px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.password-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

label {
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

.forgot-password {
    font-size: 14px;
    color: #666;
    text-decoration: none;
}

.forgot-password:hover {
    color: #333;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #0066cc;
}

input::placeholder {
    color: #999;
}


.validation-error-message {
    margin-top: 3px;
    margin-bottom: 3px;
    color: #ff3333;
}


.create-account-btn {
    width: 100%;
    padding: 14px 16px;
    background: #b22222;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 10px;
}

.create-account-btn:hover {
    background: #a01e1e;
}

.login-link {
    text-align: center;
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}

.login-link a {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
}

.login-link a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .login-card {
        margin: 20px;
        padding: 30px 25px;
        max-width: none;
    }

    .login-title {
        font-size: 22px;
    }

    .logo-text .uef-text {
        font-size: 22px;
    }

    .logo-text .university-text {
        font-size: 9px;
    }
}

@media (max-width: 480px) {
    .login-card {
        margin: 15px;
        padding: 25px 20px;
    }

    .login-title {
        font-size: 20px;
        margin-bottom: 25px;
    }

    .logo {
        gap: 10px;
    }

    .logo-text .uef-text {
        font-size: 20px;
    }

    .logo-text .university-text {
        font-size: 8px;
    }
}