:root {
    --bg: #f7f2f8;
    --panel: #ffffff;
    --ink: #261d2b;
    --muted: #70657a;
    --line: #ead7e8;
    --primary: #cf2f84;
    --primary-strong: #a71f68;
    --primary-soft: #ffeef7;
    --success: #23885e;
}

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

body {
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 15%, #f8dff0 0, transparent 42%),
        radial-gradient(circle at 92% 82%, #dcc7f5 0, transparent 36%),
        var(--bg);
}

.auth-navbar {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #ecd8e8;
}

.auth-navbar-inner {
    width: min(820px, 86vw);
    margin: 0 auto;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    color: #2d2333;
    font-weight: 800;
}

.auth-brand img {
    width: 26px;
    height: 26px;
    object-fit: contain;
}

.auth-nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.auth-nav-links a {
    text-decoration: none;
    color: #604b64;
    font-weight: 700;
    border-radius: 999px;
    padding: 0.34rem 0.75rem;
    border: 1px solid transparent;
}

.auth-nav-links a:hover {
    color: #b12371;
    border-color: #ebc6dd;
    background: #fff;
}

.auth-nav-links a.active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
}

.auth-shell {
    min-height: calc(100vh - 52px);
    display: grid;
    place-items: center;
    padding: 0.5rem;
}

.container {
    position: relative;
    width: min(780px, 84vw);
    min-height: 570px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(71, 20, 54, 0.12);
}

.form-box {
    position: absolute;
    top: 0;
    height: 100%;
    display: flex;
    align-items: center;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.form-box.login {
    left: 0;
    width: 44%;
    padding: 0.85rem;
    z-index: 2;
}

.form-box.register {
    right: 0;
    width: 56%;
    padding: 0.6rem 0.75rem;
    opacity: 0;
    pointer-events: none;
    transform: translateX(5%);
}

.container.active .form-box.login {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-5%);
}

.container.active .form-box.register {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.form-box form {
    width: 100%;
}

.form-box.register form {
    width: 100%;
    padding-right: 0;
}

.form-box h1 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.2rem, 1.5vw, 1.5rem);
    line-height: 1.2;
    margin-bottom: 0.5rem;
    color: var(--ink);
    font-weight: 700;
}

.form-subtitle {
    color: var(--muted);
    margin-bottom: 1.5rem;
    line-height: 1.5;
    font-size: 0.85rem;
}

.demo-account-card {
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 1px solid #f0e6f0;
    border-radius: 12px;
    background: #faf8fb;
}

.demo-account-title {
    font-weight: 700;
    color: var(--ink);
    font-size: 0.85rem;
}

.demo-account-copy {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--muted);
}

.demo-account-credentials {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--ink);
    background: rgba(255,255,255,0.6);
    padding: 0.4rem;
    border-radius: 6px;
    border: 1px solid #eee;
}

.demo-fill-btn {
    margin-top: 0.5rem;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #fff;
    font-weight: 800;
    padding: 0.4rem 0.7rem;
    font-size: 0.72rem;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(167, 31, 104, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.demo-fill-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(167, 31, 104, 0.3);
}

.demo-switch-row {
    margin-top: 0.45rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
}

.demo-switch-row .demo-fill-btn {
    margin-top: 0;
    width: 100%;
    text-align: center;
}

.input-box {
    position: relative;
    margin: 0.6rem 0;
}

.input-box input,
.input-box select {
    width: 100%;
    border: 1px solid #e8d8e8;
    border-radius: 8px;
    background: #fff;
    color: var(--ink);
    font: inherit;
    padding: 0.42rem 1.75rem 0.42rem 0.58rem;
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.input-box input:focus,
.input-box select:focus {
    border-color: #d574aa;
    box-shadow: 0 0 0 3px rgba(213, 116, 170, 0.15);
}

.input-box i {
    position: absolute;
    right: 0.7rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9f8ba8;
    font-size: 0.9rem;
}

.input-box.select-wrapper select {
    appearance: none;
}

.grid-two-cols {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
}

.user-type-group {
    border: 1px solid #e8d8e8;
    border-radius: 10px;
    padding: 0.6rem;
    background: #faf8fb;
    margin-bottom: 1rem;
}

.user-type-label {
    display: block;
    margin-bottom: 0.6rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-type-options {
    display: flex;
    gap: 0.5rem;
}

.user-type-option {
    flex: 1;
}

.user-type-option input {
    position: absolute;
    opacity: 0;
}

.user-type-option span {
    display: inline-flex;
    justify-content: center;
    width: 100%;
    border-radius: 8px;
    border: 1px solid #e7d8e5;
    color: #675c6f;
    font-weight: 700;
    padding: 0.35rem;
    font-size: 0.78rem;
    cursor: pointer;
}

.user-type-option input:checked + span {
    border-color: #d978ae;
    background: var(--primary-soft);
    color: #ac1f6a;
}

.forgot-link {
    margin: 0.25rem 0 0.45rem;
}

.forgot-link a {
    color: #92407a;
    text-decoration: none;
    font-size: 0.76rem;
    font-weight: 600;
}

.btn {
    width: 100%;
    border: 0;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #fff;
    font-weight: 800;
    font-size: 0.72rem;
    padding: 0.38rem 0.56rem;
    cursor: pointer;
    box-shadow: 0 10px 22px rgba(167, 31, 104, 0.28);
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(167, 31, 104, 0.3);
}

.register-success .btn {
    background: linear-gradient(135deg, #35b079, var(--success));
    box-shadow: 0 10px 22px rgba(35, 136, 94, 0.28);
}

.toggle-box {
    position: absolute;
    inset: 0 0 0 44%;
    width: 56%;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(160deg, rgba(212, 88, 169, 0.97), rgba(197, 57, 135, 0.98));
    transition: inset 0.5s ease, width 0.5s ease;
    overflow: hidden;
}

.toggle-box::before,
.toggle-box::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.11);
    z-index: 0;
}

.toggle-box::before {
    width: 270px;
    height: 270px;
    top: -90px;
    right: -70px;
}

.toggle-box::after {
    width: 220px;
    height: 220px;
    left: -85px;
    bottom: -85px;
}

.container.active .toggle-box {
    inset: 0 56% 0 0;
    width: 44%;
}

.toggle-panel {
    position: absolute;
    inset: 0;
    margin: auto;
    z-index: 1;
    width: min(100%, 188px);
    height: max-content;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.55rem;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.toggle-panel h2 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(0.9rem, 1.2vw, 1.15rem);
    margin-bottom: 0.2rem;
}

.toggle-panel p {
    margin-bottom: 0.35rem;
    opacity: 0.95;
    max-width: 22ch;
    font-size: 0.72rem;
}

.toggle-panel .btn {
    width: auto;
    min-width: 126px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow: none;
}

.toggle-left {
    transform: translateX(-24%);
    opacity: 0;
    pointer-events: none;
}

.toggle-right {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.container.active .toggle-left {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.container.active .toggle-right {
    transform: translateX(24%);
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 980px) {
    .auth-navbar-inner {
        min-height: 62px;
    }

    .auth-nav-links a {
        padding: 0.35rem 0.74rem;
        font-size: 0.88rem;
    }

    .container {
        display: flex;
        flex-direction: column;
        min-height: auto;
        height: auto;
        width: min(100%, 540px);
        border-radius: 20px;
        overflow: visible; /* Allow scrolling on shell */
    }

    .toggle-box {
        position: relative;
        inset: auto;
        width: 100%;
        height: auto;
        padding: 2.5rem 1rem;
        order: -1; /* Keep at top */
        border-radius: 0;
        transition: none;
    }

    .container.active .toggle-box {
        inset: auto;
        width: 100%;
    }

    .toggle-panel {
        position: relative;
        inset: auto;
        width: 100%;
        height: auto;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        display: none; /* Controlled by active class */
    }

    /* Show correct toggle panel based on mode */
    .container:not(.active) .toggle-right {
        display: flex;
    }

    .container.active .toggle-left {
        display: flex;
    }

    .form-box h1,
    .form-subtitle,
    .demo-account-title,
    .demo-account-copy,
    .user-type-label,
    .forgot-link {
        text-align: left; /* Keep text left-aligned inside the centered column */
    }

    .form-box {
        position: relative;
        inset: auto;
        width: 100%;
        height: auto;
        padding: 1.5rem 1.25rem 2.5rem;
        display: none; /* Controlled by active class */
        flex-direction: column;
        align-items: center; /* Center children horizontally */
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
        transition: none;
    }

    .form-box form {
        width: 100%;
        max-width: 440px; /* Professional column width */
        display: flex;
        flex-direction: column;
        align-items: flex-start; /* Ensure internal blocks align to the left of the column */
    }

    .input-wrapper,
    .demo-account-card,
    .user-type-group {
        width: 100%;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .demo-account-credentials {
        text-align: left;
    }

    .demo-fill-btn {
        margin-left: 0;
        margin-right: auto;
        display: inline-block;
    }

    .demo-switch-row {
        justify-content: flex-start;
    }

    /* Show correct form based on mode */
    .container:not(.active) .form-box.login {
        display: flex;
    }

    .container.active .form-box.register {
        display: flex;
    }

    .grid-two-cols {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .auth-shell {
        padding: 1rem 0.5rem;
        align-items: flex-start; /* Start from top for scrolling */
    }

    .container {
        width: 100%;
        border-radius: 12px;
    }

    .toggle-panel h2 {
        font-size: 1.4rem;
    }

    .form-box h1 {
        font-size: 1.25rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}