:root {
    --login-primary: #6777ef;
    --login-primary-dark: #4f5fd4;
    --login-primary-light: #8b97f5;
    --login-surface: #ffffff;
    --login-text: #1a1d26;
    --login-text-muted: #6b7280;
    --login-border: #e5e7eb;
    --login-border-focus: #6777ef;
    --login-error-bg: #fef2f2;
    --login-error-text: #dc2626;
    --login-radius: 20px;
    --login-radius-sm: 12px;
    --login-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
    --login-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    font-family: var(--login-font);
    color: var(--login-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Page background ── */

.login-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: #ffffff;
    overflow: hidden;
}

.login-bg {
    display: none;
}

/* ── Card ── */

.login-card {
    position: relative;
    z-index: 1;
    display: flex;
    width: 100%;
    max-width: 960px;
    min-height: 580px;
    background: var(--login-surface);
    border-radius: var(--login-radius);
    box-shadow: 0 20px 60px rgba(79, 95, 212, 0.18), 0 4px 16px rgba(15, 23, 42, 0.06);
    overflow: hidden;
    animation: loginFadeUp 0.5s ease-out;
}

@keyframes loginFadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Brand panel ── */

.login-brand {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 48px 40px;
    background: linear-gradient(160deg, #4f5fd4 0%, #6777ef 60%, #7c8af0 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.login-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

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

.login-logo-img {
    width: 52px;
    height: 52px;
    margin-bottom: 24px;
    display: block;
}

.login-brand-title {
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.login-brand-tagline {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.82);
    max-width: 280px;
}

.login-brand-visual {
    position: relative;
    z-index: 1;
    margin-top: 32px;
    display: flex;
    justify-content: center;
}

.login-brand-visual img {
    width: 100%;
    max-width: 300px;
    height: auto;
    opacity: 0.95;
}

/* ── Form panel ── */

.login-form-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 48px 44px;
    background: var(--login-surface);
}

.login-form-header {
    margin-bottom: 32px;
}

.login-form-header h2 {
    margin: 0 0 6px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.4px;
    color: var(--login-text);
    line-height: 1.3;
}

.login-form-header p {
    margin: 0;
    font-size: 15px;
    color: var(--login-text-muted);
}

/* ── Alert ── */

.login-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    margin-bottom: 24px;
    background: var(--login-error-bg);
    border: 1px solid #fecaca;
    border-radius: var(--login-radius-sm);
    color: var(--login-error-text);
    font-size: 14px;
    font-weight: 500;
}

.login-alert i {
    font-size: 18px;
    flex-shrink: 0;
}

/* ── Form fields ── */

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

.login-field label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--login-text);
    letter-spacing: 0.01em;
}

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

.login-input-wrap > i.zmdi {
    position: absolute;
    left: 14px;
    font-size: 18px;
    color: var(--login-text-muted);
    pointer-events: none;
    transition: color 0.2s ease;
}

.login-input {
    width: 100%;
    height: 48px;
    padding: 0 44px;
    font-family: var(--login-font);
    font-size: 15px;
    color: var(--login-text);
    background: #f9fafb;
    border: 1.5px solid var(--login-border);
    border-radius: var(--login-radius-sm);
    outline: none;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.login-input::placeholder {
    color: #9ca3af;
}

.login-input:hover {
    border-color: #d1d5db;
}

.login-input:focus {
    background: #fff;
    border-color: var(--login-border-focus);
    box-shadow: 0 0 0 3px rgba(103, 119, 239, 0.15);
}

.login-input:focus + .login-toggle-password,
.login-input-wrap:focus-within > i.zmdi {
    color: var(--login-primary);
}

.login-toggle-password {
    position: absolute;
    right: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--login-text-muted);
    cursor: pointer;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.login-toggle-password:hover {
    color: var(--login-primary);
    background: rgba(103, 119, 239, 0.08);
}

/* ── Checkbox ── */

.login-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.login-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--login-text-muted);
    user-select: none;
}

.login-checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.login-checkbox-box {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    border: 1.5px solid var(--login-border);
    border-radius: 5px;
    background: #f9fafb;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    position: relative;
}

.login-checkbox input:checked + .login-checkbox-box {
    background: var(--login-primary);
    border-color: var(--login-primary);
}

.login-checkbox input:checked + .login-checkbox-box::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 5px;
    height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.login-checkbox input:focus-visible + .login-checkbox-box {
    box-shadow: 0 0 0 3px rgba(103, 119, 239, 0.2);
}

/* ── Submit button ── */

.login-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    height: 48px;
    margin-top: 4px;
    padding: 0 24px;
    font-family: var(--login-font);
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-dark) 100%);
    border: none;
    border-radius: var(--login-radius-sm);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    box-shadow: 0 4px 14px rgba(103, 119, 239, 0.35);
}

.login-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(103, 119, 239, 0.45);
}

.login-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(103, 119, 239, 0.3);
}

.login-submit i {
    font-size: 18px;
    transition: transform 0.2s ease;
}

.login-submit:hover i {
    transform: translateX(3px);
}

/* ── Footer ── */

.login-footer {
    margin-top: 40px;
    text-align: center;
    font-size: 12px;
    color: #9ca3af;
}

/* ── Responsive ── */

@media screen and (max-width: 768px) {
    .login-page {
        padding: 16px;
        align-items: flex-start;
        padding-top: 32px;
    }

    .login-card {
        flex-direction: column;
        min-height: auto;
        max-width: 440px;
    }

    .login-brand {
        padding: 32px 28px 24px;
    }

    .login-brand-tagline {
        max-width: none;
        font-size: 14px;
    }

    .login-brand-visual {
        display: none;
    }

    .login-form-panel {
        padding: 32px 28px 36px;
    }

    .login-form-header h2 {
        font-size: 22px;
    }

    .login-footer {
        margin-top: 28px;
    }
}

@media screen and (max-width: 400px) {
    .login-form-panel {
        padding: 28px 20px 32px;
    }

    .login-brand {
        padding: 28px 20px 20px;
    }
}

/* ── Legacy class support (two-factor page) ── */

.main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: #ffffff;
}

.signin-content {
    display: flex;
    width: 100%;
    max-width: 960px;
    background: var(--login-surface);
    border-radius: var(--login-radius);
    box-shadow: var(--login-shadow);
    overflow: hidden;
}

.signin-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 40px;
    background: linear-gradient(160deg, #4f5fd4 0%, #6777ef 60%, #7c8af0 100%);
}

.signin-image figure {
    margin: 0;
}

.signin-image img {
    max-width: 280px;
    width: 100%;
    filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.15));
}

.signin-form {
    flex: 1;
    padding: 48px 44px;
}

.signin-form .form-title {
    margin: 0 0 6px;
    font-family: var(--login-font);
    font-size: 26px;
    font-weight: 700;
    color: var(--login-text);
}

.signin-form .form-group {
    margin-bottom: 20px;
}

.signin-form .form-control {
    height: 48px;
    padding: 0 16px;
    font-family: var(--login-font);
    font-size: 15px;
    border: 1.5px solid var(--login-border);
    border-radius: var(--login-radius-sm);
    background: #f9fafb;
}

.signin-form .form-control:focus {
    border-color: var(--login-border-focus);
    box-shadow: 0 0 0 3px rgba(103, 119, 239, 0.15);
    background: #fff;
}

.signin-form .btn-primary {
    width: 100%;
    height: 48px;
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-dark) 100%) !important;
    border: none !important;
    border-radius: var(--login-radius-sm) !important;
    font-family: var(--login-font);
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(103, 119, 239, 0.35);
}

.container {
    width: 100%;
    max-width: 960px;
    background: transparent;
    box-shadow: none;
    border-radius: 0;
    margin: 0;
}

@media screen and (max-width: 768px) {
    .signin-content {
        flex-direction: column;
        max-width: 440px;
    }

    .signin-image {
        display: none;
    }

    .signin-form {
        padding: 32px 28px 36px;
        margin: 0;
    }
}