@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700&display=swap');

/* Google Sans Font Integration */
@font-face {
    font-family: 'Google Sans';
    font-style: normal;
    font-weight: 400;
    src: local('Google Sans Regular'), local('Google Sans-Regular'), url(https://fonts.gstatic.com/s/googlesans/v14/4UaGrENHsxJlGDuGo1OIlL3Owp4.woff2) format('woff2');
}
@font-face {
    font-family: 'Google Sans';
    font-style: normal;
    font-weight: 500;
    src: local('Google Sans Medium'), local('Google Sans-Medium'), url(https://fonts.gstatic.com/s/googlesans/v14/4UabrENHsxJlGDuGo1OIlLU94YtzCwA.woff2) format('woff2');
}
@font-face {
    font-family: 'Google Sans';
    font-style: normal;
    font-weight: 700;
    src: local('Google Sans Bold'), local('Google Sans-Bold'), url(https://fonts.gstatic.com/s/googlesans/v14/4UabrENHsxJlGDuGo1OIlLV154tzCwA.woff2) format('woff2');
}

:root {
    /* Colors from DESIGN.md */
    --primary: #00658c;
    --primary-container: #3da5d9;
    --surface: #f6fafe;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f0f4f8;
    --surface-container: #ebeef3;
    --surface-container-high: #e5e8ed;
    --on-surface: #181c1f;
    --on-surface-variant: #3f484f;
    --outline-variant: #bec8d0;
    
    --font-family: 'Google Sans', 'Noto Sans Thai', sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family);
    /* Soft gradient background matching the design */
    background: radial-gradient(circle at top left, #e8f4fe 0%, #ffffff 40%, #fdf6e7 100%);
    color: var(--on-surface);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    display: flex;
    max-width: 1000px;
    width: 100%;
    gap: 4rem;
    align-items: center;
}

/* --- Left Side (Info) --- */
.login-info {
    flex: 1;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    font-weight: 500;
    color: var(--on-surface);
    font-size: 1rem;
}

.brand-logo {
    width: 48px;
    height: 48px;
    background: var(--surface-container-low);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-container);
    font-size: 1.25rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}

.system-title {
    font-size: 2.75rem;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.system-desc {
    font-size: 1rem;
    color: var(--on-surface-variant);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 95%;
}

.feature-cards {
    display: flex;
    gap: 1rem;
}

.feature-card {
    background: var(--surface-container-lowest);
    border: 1px solid var(--surface-container);
    border-radius: 1rem; /* rounded-lg */
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
    background: #c5e7ff;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.feature-icon.bg-yellow {
    background: #ffdf94;
    color: #725800;
}

.feature-text h3 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    color: var(--on-surface);
    font-weight: 700;
}

.feature-text p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--on-surface-variant);
}

/* --- Right Side (Form Box) --- */
.login-box {
    flex: 0 0 440px;
    background: var(--surface-container-lowest);
    border-radius: 1.5rem; /* rounded-xl from DESIGN.md */
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); /* Level 1 card shadow */
    overflow: hidden;
    position: relative;
}

.login-box-header {
    height: 10px;
    background: var(--primary);
    width: 100%;
}

.login-box-content {
    padding: 2.5rem 2.5rem;
}

.login-title {
    text-align: center;
    font-size: 1.75rem;
    margin: 0 0 0.5rem 0;
    color: var(--on-surface);
    font-weight: 700;
}

.login-subtitle {
    text-align: center;
    color: var(--on-surface-variant);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.btn {
    width: 100%;
    padding: 0.875rem;
    border-radius: 0.5rem; /* rounded-lg */
    border: none;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.9;
}

.btn-thaid {
    background: var(--primary);
    color: white;
    margin-bottom: 0.75rem;
}

.btn-line {
    background: #06C755;
    color: white;
}

.btn-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

i.btn-icon {
    font-size: 1.25rem;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
    color: var(--outline-variant);
    font-size: 0.875rem;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--surface-container);
}

.divider span {
    padding: 0 1rem;
    color: var(--outline-variant);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--on-surface);
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid transparent;
    background: var(--surface-container-low);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--on-surface);
    transition: border-color 0.2s, background 0.2s;
}

.form-group input:focus {
    outline: none;
    background: var(--surface-container-lowest);
    border-color: var(--primary);
    border-width: 1px;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--on-surface-variant);
}

.checkbox-container input {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.btn-submit {
    background: #4ab2e9; /* Light blue similar to the design mockup */
    color: white;
    margin-bottom: 1.5rem;
}

.register-link {
    text-align: center;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.register-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* --- Footer --- */
.footer {
    background: var(--surface-container-high);
    padding: 1.5rem 2rem;
    margin-top: auto;
}

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

.footer-title {
    font-weight: 700;
    margin: 0 0 0.25rem 0;
    color: var(--on-surface);
    font-size: 1.1rem;
}

.footer-copyright {
    margin: 0;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.footer-right {
    display: flex;
    gap: 1.5rem;
}

.footer-right a {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-size: 0.875rem;
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .login-container {
        flex-direction: column;
        gap: 2.5rem;
    }
    .login-info, .login-box {
        width: 100%;
        flex: none;
    }
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .feature-cards {
        flex-direction: column;
    }
}