:root {
    --primary-navy: #0F172A;
    --deep-blue: #1E3A8A;
    --bright-blue: #2563EB;
    --light-blue: #DBEAFE;
    --bg-soft: #F8FAFC;
    --card-white: #FFFFFF;
    --border: #E5E7EB;
    --text-primary: #111827;
    --text-muted: #64748B;
    --success: #16A34A;
    --warning: #F59E0B;
    --danger: #DC2626;
    --glass-bg: rgba(15, 23, 42, 0.55);
    --glass-border: rgba(37, 99, 235, 0.35);
    --glass-glow: rgba(37, 99, 235, 0.15);
    --transition: 0.25s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

body.login-page {
    font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--bg-soft);
    line-height: 1.6;
    min-height: 100vh;
}

.login-wrapper {
    display: grid;
    grid-template-columns: 55% 45%;
    min-height: 100vh;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

/* ============================================================
   Left Visual Panel
   ============================================================ */

.login-visual {
    position: relative;
    min-height: 100vh;
    background-color: var(--primary-navy);
    background-image:
        linear-gradient(rgba(5, 15, 35, 0.78), rgba(5, 15, 35, 0.88)),
        url("../images/login-ai-mbg-bg.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: stretch;
}

.visual-overlay {
    width: 100%;
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 1.25rem;
    position: relative;
    z-index: 1;
}

.visual-header h1 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.visual-header p {
    margin: 0;
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
    font-weight: 500;
    color: rgba(219, 234, 254, 0.9);
}

.sentiment-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.sentiment-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.sentiment-positive {
    background: rgba(22, 163, 74, 0.18);
    color: #BBF7D0;
    border-color: rgba(22, 163, 74, 0.35);
}

.sentiment-neutral {
    background: rgba(245, 158, 11, 0.16);
    color: #FDE68A;
    border-color: rgba(245, 158, 11, 0.35);
}

.sentiment-negative {
    background: rgba(220, 38, 38, 0.16);
    color: #FECACA;
    border-color: rgba(220, 38, 38, 0.35);
}

.feature-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.feature-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 500;
    color: rgba(219, 234, 254, 0.95);
    background: rgba(15, 23, 42, 0.42);
    border: 1px solid rgba(37, 99, 235, 0.28);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.feature-chip i {
    font-size: 0.8rem;
    color: var(--bright-blue);
}

/* ============================================================
   Right Login Form
   ============================================================ */

.login-form-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-soft);
    overflow-y: auto;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--card-white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1.5rem 1.5rem 1.25rem;
    box-shadow:
        0 1px 3px rgba(15, 23, 42, 0.06),
        0 12px 32px rgba(15, 23, 42, 0.08);
}

.login-card-header {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1.1rem;
    border-bottom: 1px solid var(--border);
}

.login-logo {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-logo svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 3px 8px rgba(37, 99, 235, 0.22));
}

.login-brand {
    min-width: 0;
    flex: 1;
}

.login-welcome {
    margin: 0 0 0.15rem;
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--bright-blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.login-app-name {
    margin: 0 0 0.2rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-navy);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.login-app-subtitle {
    margin: 0;
    font-size: 0.74rem;
    font-weight: 500;
    color: var(--text-muted);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.login-alerts {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.login-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    padding: 0.6rem 0.75rem;
    border-radius: 10px;
    font-size: 0.8rem;
    line-height: 1.4;
}

.login-alert i {
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.login-alert-danger {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.login-alert-success {
    background: #F0FDF4;
    border: 1px solid #BBF7D0;
    color: #166534;
}

.login-alert-info,
.login-alert-warning {
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    color: #1E40AF;
}

.form-group {
    margin-bottom: 0.85rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: color var(--transition);
}

.form-input {
    width: 100%;
    padding: 0.62rem 2.5rem 0.62rem 2.4rem;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 10px;
    outline: none;
    transition:
        border-color var(--transition),
        box-shadow var(--transition),
        background-color var(--transition);
}

.form-input::placeholder {
    color: #94A3B8;
}

.form-input:focus {
    border-color: var(--bright-blue);
    background: var(--card-white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-field:focus-within .input-icon {
    color: var(--bright-blue);
}

.password-toggle {
    position: absolute;
    right: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition), background-color var(--transition);
}

.password-toggle:hover {
    color: var(--bright-blue);
    background: var(--light-blue);
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}

.remember-me input[type="checkbox"] {
    width: 0.9rem;
    height: 0.9rem;
    accent-color: var(--bright-blue);
    cursor: pointer;
}

.forgot-link {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--bright-blue);
    text-decoration: none;
    transition: color var(--transition);
}

.forgot-link:hover {
    color: var(--deep-blue);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0.65rem 1rem;
    border: none;
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--bright-blue) 0%, var(--deep-blue) 100%);
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.28);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        opacity var(--transition);
}

.btn-login:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(37, 99, 235, 0.42);
}

.btn-login:active:not(:disabled) {
    transform: translateY(0);
}

.btn-login:disabled {
    opacity: 0.85;
    cursor: not-allowed;
}

.btn-text[hidden],
.btn-loading[hidden] {
    display: none !important;
}

.btn-loading:not([hidden]) {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #FFFFFF;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.demo-accounts {
    margin-top: 0.85rem;
    border: 1px dashed var(--border);
    border-radius: 10px;
    background: var(--bg-soft);
    overflow: hidden;
}

.demo-accounts summary {
    padding: 0.45rem 0.65rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.demo-accounts summary::-webkit-details-marker {
    display: none;
}

.demo-accounts summary::before {
    content: "▸";
    display: inline-block;
    margin-right: 0.35rem;
    transition: transform var(--transition);
}

.demo-accounts[open] summary::before {
    transform: rotate(90deg);
}

.demo-accounts p {
    margin: 0;
    padding: 0 0.65rem 0.45rem;
    font-size: 0.68rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.login-card-footer {
    margin-top: 0.85rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.login-card-footer p {
    margin: 0;
    font-size: 0.68rem;
    color: #94A3B8;
    line-height: 1.4;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1200px) {
    .login-wrapper {
        grid-template-columns: 50% 50%;
    }

    .visual-overlay {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 992px) {
    .login-wrapper {
        grid-template-columns: 40% 60%;
    }

    .visual-overlay {
        padding: 1.5rem;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .login-wrapper {
        grid-template-columns: 1fr;
    }

    .login-visual {
        display: none;
    }

    .login-form-section {
        width: 100%;
        min-height: 100vh;
        padding: 20px;
    }

    .login-card {
        max-width: 100%;
        padding: 1.35rem 1.25rem 1rem;
    }
}

@media (max-width: 576px) {
    .login-form-section {
        padding: 16px;
        background:
            radial-gradient(circle at top right, rgba(37, 99, 235, 0.06), transparent 55%),
            var(--bg-soft);
    }

    .login-card {
        border-radius: 16px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

@media (max-width: 768px) {
    body.login-page::before {
        content: "";
        position: fixed;
        inset: 0;
        pointer-events: none;
        opacity: 0.03;
        background-image:
            radial-gradient(circle at 20% 30%, var(--bright-blue) 1px, transparent 1px),
            radial-gradient(circle at 80% 70%, var(--deep-blue) 1px, transparent 1px);
        background-size: 40px 40px;
        z-index: 0;
    }

    .login-wrapper {
        position: relative;
        z-index: 1;
    }
}