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

body {
    font-family: 'Inter', sans-serif;
    background-color: #f8f9fa;
    overflow-x: hidden;
}

/* Navigation Bar */
.navbar {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .navbar-container {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0 24px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #2d3142;
    font-size: 24px;
    font-weight: 700;
    justify-content: flex-start;
}

.navbar-brand i {
    font-size: 28px;
    color: #4CAF50;
}

.navbar-toggler {
    border: none;
    padding: 5px;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler i {
    font-size: 24px;
    color: #2d3142;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto;
    justify-content: flex-end;
}

.nav-link {
    padding: 10px 20px;
    text-decoration: none;
    color: #2d3142;
    font-weight: 500;
    font-size: 15px;
    border-radius: 8px;
    transition: all 0.3s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    background: none;
}

.nav-link:not(.btn-outline):not(.btn-primary):hover {
    color: #4CAF50;
    background-color: #f8f9fa;
}

.nav-link.btn-outline {
    border: 2px solid #4CAF50;
    color: #4CAF50;
}

.nav-link.btn-outline:hover {
    background-color: #4CAF50;
    color: #ffffff;
}

.nav-link.btn-primary {
    background-color: #4CAF50;
    color: #ffffff;
}

.nav-link.btn-primary:hover {
    background-color: #45a049;
    color: #ffffff;
}

/* Sign In Section */
.signin-section {
    padding: 100px 0 80px;
    min-height: calc(100vh - 200px);
}

.signin-container {
    max-width: 480px;
    margin: 0 auto 50px;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 50px 40px;
}

.signin-header {
    text-align: center;
    margin-bottom: 40px;
}

.signin-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.signin-icon i {
    font-size: 40px;
    color: #ffffff;
}

.signin-icon img.signin-school-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.signin-title {
    font-size: 28px;
    font-weight: 700;
    color: #2d3142;
    margin-bottom: 8px;
}

.signin-subtitle {
    font-size: 15px;
    color: #6c757d;
}

/* Form Styles */
.signin-form {
    width: 100%;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    font-weight: 500;
    color: #2d3142;
    margin-bottom: 8px;
    font-size: 14px;
    display: block;
}

.required {
    color: #ff4444;
    margin-left: 3px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    color: #6c757d;
    font-size: 18px;
    z-index: 1;
}

.form-control {
    width: 100%;
    padding: 12px 16px 12px 45px;
    border: 2px solid #e4e6eb;
    border-radius: 8px;
    font-size: 15px;
    color: #2d3142;
    transition: all 0.3s;
    background-color: #ffffff;
}

.form-control:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-control::placeholder {
    color: #adb5bd;
}

/* Error messages */
.text-danger {
    color: #dc3545 !important;
    font-size: 13px;
    margin-top: 5px;
    display: block;
}

.text-danger.small {
    font-size: 12px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
    z-index: 1;
}

.password-toggle:hover {
    color: #4CAF50;
}

.password-toggle i {
    font-size: 18px;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    border: 2px solid #e4e6eb;
    border-radius: 4px;
    margin: 0;
}

.form-check-input:checked {
    background-color: #4CAF50;
    border-color: #4CAF50;
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-check-label {
    font-size: 14px;
    color: #2d3142;
    cursor: pointer;
    margin: 0;
}

.forgot-password {
    color: #4CAF50;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.forgot-password:hover {
    color: #45a049;
    text-decoration: underline;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: #ffffff;
    border: none;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
    margin-bottom: 24px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

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

/* Divider */
.divider {
    position: relative;
    text-align: center;
    margin: 30px 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #e4e6eb;
}

.divider span {
    position: relative;
    background-color: #ffffff;
    padding: 0 15px;
    color: #6c757d;
    font-size: 14px;
}

/* Social Login */
.social-login {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.btn-social {
    width: 100%;
    padding: 12px;
    border: 2px solid #e4e6eb;
    border-radius: 8px;
    background-color: #ffffff;
    color: #2d3142;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s;
}

.btn-social:hover {
    border-color: #4CAF50;
    background-color: #f8f9fa;
    color: #4CAF50;
}

.btn-social i {
    font-size: 20px;
}

.signin-footer {
    text-align: center;
    font-size: 14px;
    color: #6c757d;
    margin: 0;
}

.link {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.link:hover {
    color: #45a049;
    text-decoration: underline;
}

/* Info Cards */
.signin-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.info-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.info-card i {
    font-size: 40px;
    color: #4CAF50;
    margin-bottom: 15px;
}

.info-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #2d3142;
    margin-bottom: 10px;
}

.info-card p {
    font-size: 14px;
    color: #6c757d;
    margin: 0;
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: #2d3142;
    color: #ffffff;
    padding: 60px 0 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-brand {
    margin-bottom: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #ffffff;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-logo i {
    font-size: 28px;
    color: #4CAF50;
}

.footer-description {
    color: #adb5bd;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #adb5bd;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #4CAF50;
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    color: #adb5bd;
    font-size: 14px;
}

.footer-contact i {
    color: #4CAF50;
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

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

.footer-bottom p {
    color: #adb5bd;
    font-size: 14px;
    margin: 0;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .signin-section {
        padding: 30px 0 60px;
    }

    .signin-container {
        padding: 40px 30px;
        margin-bottom: 40px;
    }

    .signin-title {
        font-size: 24px;
    }

    .signin-subtitle {
        font-size: 14px;
    }

    .signin-icon {
        width: 70px;
        height: 70px;
    }

    .signin-icon i {
        font-size: 35px;
    }

    .signin-info {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .info-card {
        padding: 25px;
    }
}

@media (max-width: 576px) {
    .signin-container {
        padding: 30px 20px;
        border-radius: 12px;
    }

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

    .form-control {
        font-size: 14px;
        padding: 10px 14px 10px 40px;
    }

    .btn-submit {
        padding: 14px;
        font-size: 15px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .navbar-nav {
        gap: 10px;
    }

    .nav-link {
        font-size: 14px;
        padding: 8px 16px;
    }
}

/* Two-Factor Authentication Styles */
.two-factor-info {
    background-color: #e8f5e9;
    border: 1px solid #4CAF50;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.two-factor-info i {
    color: #4CAF50;
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 2px;
}

.two-factor-info p {
    margin: 0;
    color: #2d3142;
    font-size: 14px;
    line-height: 1.5;
}

.resend-code-wrapper {
    margin-top: 10px;
    text-align: right;
}

.btn-resend-code {
    background: none;
    border: none;
    color: #4CAF50;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-resend-code:hover {
    color: #45a049;
    text-decoration: underline;
}

.btn-resend-code:disabled {
    color: #adb5bd;
    cursor: not-allowed;
    text-decoration: none;
}

.btn-resend-code i {
    font-size: 16px;
}

#verificationCode {
    text-align: center;
    font-size: 20px;
    letter-spacing: 4px;
    font-weight: 600;
}

#verificationCode::placeholder {
    letter-spacing: 2px;
    font-size: 16px;
    font-weight: normal;
}