/* ===== CSS Variables (Light default) ===== */
:root {
    --bg-start: #f5f7fb;
    --bg-end: #eef1f8;
    --card-bg: #ffffff;
    --text-primary: #0b0b1a;
    --text-secondary: #3d3d5c;
    --text-muted: #7a7a9e;
    --input-bg: #f8faff;
    --input-border: #dce0ec;
    --input-focus: #6c7bff;
    --shadow: 0 20px 60px rgba(11, 11, 26, 0.08);
    --shadow-hover: 0 30px 80px rgba(11, 11, 26, 0.14);
    --btn-bg: #0b0b1a;
    --btn-hover: #22223e;
    --btn-text: #ffffff;
    --link-color: #6c7bff;
    --link-hover: #4a5ae8;
    --divider-color: #e8ecf4;
    --accent-gradient: linear-gradient(135deg, #6c7bff, #8b5cf6);
    --accent-light: rgba(108, 123, 255, 0.08);
    --social-border: #dce0ec;
    --social-hover: #f0f4ff;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-gradient: linear-gradient(145deg, #1a1a3e, #4a1a8a);
}

/* ===== Dark Theme ===== */
[data-bs-theme="dark"] {
    --bg-start: #0c0c1a;
    --bg-end: #14142a;
    --card-bg: #1a1a2e;
    --text-primary: #f0f0f8;
    --text-secondary: #b0b0d0;
    --text-muted: #7a7a9e;
    --input-bg: #22223e;
    --input-border: #33335a;
    --input-focus: #7a8aff;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.50);
    --shadow-hover: 0 30px 80px rgba(0, 0, 0, 0.65);
    --btn-bg: #f0f0f8;
    --btn-hover: #ffffff;
    --btn-text: #0b0b1a;
    --link-color: #7a8aff;
    --link-hover: #9aaeff;
    --divider-color: #2a2a4e;
    --accent-light: rgba(108, 123, 255, 0.15);
    --social-border: #33335a;
    --social-hover: #22223e;
    --sidebar-gradient: linear-gradient(145deg, #0b0b2a, #2d0a6a);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-start);
    transition: background var(--transition);
    padding: 1.5rem;
}

/* ===== Split Layout ===== */
.login-wrapper {
    display: flex;
    width: 100%;
    max-width: 1120px;
    min-height: 640px;
    background: var(--card-bg);
    border-radius: 40px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: background var(--transition), box-shadow var(--transition);
    position: relative;
}

/* ===== Sidebar (branding) ===== */
.login-sidebar {
    flex: 0 0 42%;
    background: var(--sidebar-gradient);
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.login-sidebar::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 80%;
    height: 80%;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    pointer-events: none;
}

/* --- Top brand: ERAD + tagline only --- */
.login-sidebar .top-brand {
    position: relative;
    z-index: 1;
}

.login-sidebar .top-brand h2 {
    font-weight: 800;
    font-size: 2.2rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.login-sidebar .top-brand .tagline {
    font-weight: 400;
    opacity: 0.9;
    font-size: 1rem;
    max-width: 80%;
    line-height: 1.5;
}

/* --- Bottom brand: logo + company name + copyright --- */
.bottom-brand {
    position: relative;
    z-index: 1;
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bottom-brand .logo-icon {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.bottom-brand .logo-icon img {
    max-height: 36px;
    width: auto;
    display: block;
    border-radius: 6px;
}

.bottom-brand .logo-icon .company-name {
    font-weight: 500;
    font-size: 0.95rem;
    color: #fff;
    opacity: 0.9;
}

.bottom-brand .copyright {
    font-size: 0.75rem;
    opacity: 0.6;
    color: #fff;
    margin: 0;
    letter-spacing: 0.02em;
}

/* ===== Form Side ===== */
.login-form-side {
    flex: 1;
    padding: 3rem 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--card-bg);
    transition: background var(--transition);
}

/* ===== Theme Toggle (modern switch) ===== */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.theme-switch {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--input-border);
    border-radius: 40px;
    cursor: pointer;
    transition: background var(--transition);
    flex-shrink: 0;
    border: none;
    padding: 0;
}

.theme-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition), background var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
}

[data-bs-theme="dark"] .theme-switch {
    background: var(--input-focus);
}

[data-bs-theme="dark"] .theme-switch::after {
    transform: translateX(22px);
    background: #1a1a2e;
}

.theme-switch-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition);
    user-select: none;
}

/* ===== Form Title ===== */
.form-header {
    margin-bottom: 2rem;
}

.form-header h1 {
    font-weight: 700;
    font-size: 2rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    transition: color var(--transition);
    margin-bottom: 0.25rem;
}

.form-header h1 span {
    color: var(--input-focus);
}

.form-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

/* ===== Floating Inputs ===== */
.form-floating {
    margin-bottom: 1.25rem;
}

.form-floating .form-control {
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: 14px;
    padding: 1rem 1rem 0.5rem 3rem;
    height: 58px;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: background var(--transition), border var(--transition), color var(--transition), box-shadow 0.25s;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.form-floating .form-control:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 4px var(--accent-light), inset 0 2px 4px rgba(0, 0, 0, 0.02);
    background: var(--input-bg);
}

.form-floating label {
    color: var(--text-muted);
    padding-left: 3rem;
    transition: color var(--transition);
}

.form-floating .form-control:focus~label,
.form-floating .form-control:not(:placeholder-shown)~label {
    color: var(--input-focus);
}

.input-icon {
    position: absolute;
    left: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.05rem;
    pointer-events: none;
    transition: color var(--transition);
}

.form-floating .form-control:focus~.input-icon {
    color: var(--input-focus);
}

.password-toggle {
    position: absolute;
    right: 1.1rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.05rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: color var(--transition);
}

.password-toggle:hover {
    color: var(--text-primary);
}

/* ===== Options Row ===== */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0.5rem 0 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1.1rem;
    height: 1.1rem;
    border-radius: 4px;
    border: 1.5px solid var(--input-border);
    background-color: var(--input-bg);
    cursor: pointer;
    transition: background var(--transition), border var(--transition);
    margin-top: 0;
}

.form-check-input:checked {
    background-color: var(--input-focus);
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition);
}

.forgot-link {
    font-size: 0.9rem;
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
}

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

/* ===== Submit Button ===== */
.btn-login {
    width: 100%;
    padding: 0.9rem;
    border: none;
    border-radius: 14px;
    font-weight: 600;
    font-size: 1rem;
    background: var(--btn-bg);
    color: var(--btn-text);
    transition: background var(--transition), color var(--transition), transform 0.2s, box-shadow 0.3s;
    box-shadow: 0 4px 16px rgba(11, 11, 26, 0.10);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

.btn-login:hover {
    background: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(11, 11, 26, 0.16);
}

.btn-login:active {
    transform: scale(0.97);
}

.btn-login i {
    font-size: 1.1rem;
    transition: transform 0.3s;
}

.btn-login:hover i {
    transform: translateX(4px);
}

/* ===== Divider & Social ===== */
.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 1.2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1.5px;
    background: var(--divider-color);
    transition: background var(--transition);
}

.social-btns {
    display: flex;
    gap: 0.75rem;
}

.social-btns .btn-social {
    flex: 1;
    padding: 0.6rem;
    border-radius: 12px;
    border: 1.5px solid var(--social-border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background var(--transition), border var(--transition), color var(--transition), transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.social-btns .btn-social:hover {
    background: var(--social-hover);
    border-color: var(--input-focus);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.social-btns .btn-social i {
    font-size: 1.15rem;
}

/* ===== Footer ===== */
.signup-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.signup-footer a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

.signup-footer a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* ===== Error Alerts ===== */
.alert-error {
    background: var(--accent-light);
    border: 1px solid rgba(239, 68, 68, 0.20);
    color: #dc2626;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

[data-bs-theme="dark"] .alert-error {
    color: #f87171;
    background: rgba(239, 68, 68, 0.10);
}

/* ===== Loading State ===== */
.btn-login .spinner {
    display: none;
    width: 1.2rem;
    height: 1.2rem;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

[data-bs-theme="dark"] .btn-login .spinner {
    border-color: rgba(11, 11, 26, 0.20);
    border-top-color: #0b0b1a;
}

.btn-login.loading .spinner {
    display: inline-block;
}

.btn-login.loading .btn-text {
    display: none;
}

.btn-login.loading i {
    display: none;
}

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

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .login-sidebar {
        flex: 0 0 35%;
        padding: 2rem 1.8rem;
    }

    .login-sidebar .top-brand h2 {
        font-size: 1.6rem;
    }

    .login-form-side {
        padding: 2.5rem 2.5rem;
    }
}

@media (max-width: 768px) {
    .login-wrapper {
        flex-direction: column;
        border-radius: 28px;
        min-height: auto;
    }

    .login-sidebar {
        flex: 1;
        padding: 2rem 1.8rem;
        min-height: 140px;
    }

    .login-sidebar .top-brand .tagline {
        max-width: 100%;
    }

    .login-form-side {
        padding: 2rem 1.5rem;
    }

    .form-header h1 {
        font-size: 1.7rem;
    }

    .theme-switch-wrapper {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-wrapper {
        border-radius: 20px;
    }

    .login-sidebar {
        padding: 1.5rem 1.2rem;
    }

    .login-sidebar .top-brand h2 {
        font-size: 1.3rem;
    }

    .bottom-brand .logo-icon img {
        max-height: 28px;
    }

    .bottom-brand .logo-icon .company-name {
        font-size: 0.8rem;
    }

    .bottom-brand .copyright {
        font-size: 0.65rem;
    }

    .login-form-side {
        padding: 1.5rem 1rem;
    }

    .social-btns {
        flex-direction: column;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.3rem;
    }
}


/* Override Bootstrap's floating label pseudo-element */
.form-floating>.form-control:focus~label::after,
.form-floating>.form-control:not(:placeholder-shown)~label::after,
.form-floating>.form-control-plaintext~label::after,
.form-floating>.form-select~label::after {
    display: none;
}

/* Adjust label to not use the pseudo-element for background */
.form-floating label {
    background: transparent;
    padding-left: 3rem;
}