:root {
    /* Light mode */
    --auth-bg-light: #f4f6fb;
    --auth-panel-light: rgba(255, 255, 255, 0.96);
    --auth-border-light: #e5e7eb;
    --auth-text-main-light: #1e293b;
    --auth-text-muted-light: #6b7280;
    --auth-accent-light: #0ea5e9;
    --auth-accent-hover-light: #0284c7;
    --auth-shadow-light: rgba(15, 23, 42, 0.12);

    /* Dark mode */
    --auth-bg-dark: #0c1015;
    --auth-panel-dark: rgba(18, 24, 31, 0.92);
    --auth-border-dark: #1f2730;
    --auth-text-main-dark: #e2e8f0;
    --auth-text-muted-dark: #94a3b8;
    --auth-accent-dark: #38bdf8;
    --auth-accent-hover-dark: #0ea5e9;
    --auth-shadow-dark: rgba(2, 6, 23, 0.55);
}

body.auth-page {
    font-family: "Inter", "Poppins", "Segoe UI", sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--auth-bg-light);
    color: var(--auth-text-main-light);
    transition: background 0.4s ease, color 0.4s ease;
    padding: 2rem 1.25rem;
}

body.auth-page.dark {
    background: var(--auth-bg-dark);
    color: var(--auth-text-main-dark);
}

.auth-wrapper {
    display: flex;
    overflow: hidden;
    border-radius: 18px;
    box-shadow: 0 18px 48px var(--auth-shadow-light);
    background: var(--auth-panel-light);
    backdrop-filter: blur(8px);
    max-width: 920px;
    width: 100%;
    animation: fadeIn 0.7s ease forwards;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

body.dark .auth-wrapper {
    background: var(--auth-panel-dark);
    box-shadow: 0 22px 54px var(--auth-shadow-dark);
    border-color: rgba(31, 39, 48, 0.75);
}


.auth-info {
    flex: 1;
    min-height: 440px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12), rgba(14, 165, 233, 0.04));
    color: var(--auth-text-main-light);
    padding: 2.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    border-right: 1px solid rgba(148, 163, 184, 0.18);
}

.auth-info::after {
    content: none;
}

.auth-info h1 {
    font-size: 1.85rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.auth-info p {
    font-size: 0.95rem;
    color: var(--auth-text-muted-light);
    line-height: 1.6;
}

body.dark .auth-info {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(12, 74, 110, 0.08));
    color: var(--auth-text-main-dark);
    border-right-color: rgba(51, 65, 85, 0.4);
}

body.dark .auth-info p {
    color: var(--auth-text-muted-dark);
}

.auth-quick-info {
    display: grid;
    gap: 1.5rem;
    font-size: 0.9rem;
}

.auth-quick-info .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    opacity: 0.75;
    margin-bottom: 0.35rem;
}


.auth-form {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem;
    overflow: hidden;
}

.auth-form::before {
    content: "";
    position: absolute;
    inset: 0;
    backdrop-filter: blur(6px);
    background: linear-gradient(180deg, rgba(14, 165, 233, 0.05) 0%, rgba(255, 255, 255, 0.08) 100%);
    opacity: 0.6;
    pointer-events: none;
}

body.dark .auth-form::before {
    background: linear-gradient(180deg, rgba(30, 64, 175, 0.08) 0%, rgba(17, 24, 39, 0.7) 100%);
    opacity: 0.65;
}

.auth-form-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.auth-form .back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--auth-accent-light);
    font-size: 0.9rem;
    text-decoration: none;
}

.auth-form .back-link svg {
    width: 18px;
    height: 18px;
}

body.dark .auth-form .back-link {
    color: var(--auth-accent-dark);
}

.auth-form h2 {
    font-size: 1.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: -0.25rem;
}

.auth-form .welcome-text {
    font-size: 1rem;
    color: var(--auth-text-muted-light);
}

.auth-form .welcome-text .small-text {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.9rem;
    color: var(--auth-text-muted-light);
}

body.dark .auth-form .welcome-text {
    color: var(--auth-text-muted-dark);
}

body.dark .auth-form .welcome-text .small-text {
    color: var(--auth-text-muted-dark);
}

.auth-form form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.auth-form .form-grid {
    display: grid;
    gap: 1.2rem;
}

.auth-form .form-grid.two-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.auth-form .form-grid.two-cols .two-span {
    grid-column: span 2;
}


.auth-form label {
    display: block;
    font-size: 0.9rem;
    color: var(--auth-text-muted-light);
    margin-bottom: 0.35rem;
    font-weight: 500;
    letter-spacing: 0.3px;
}

body.dark .auth-form label {
    color: var(--auth-text-muted-dark);
}

.auth-form .input-wrapper {
    position: relative;
}

.auth-form input,
.auth-form textarea {
    width: 100%;
    border: 1px solid var(--auth-border-light);
    border-radius: 10px;
    padding: 0.8rem 1rem 0.8rem 2.5rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--auth-text-main-light);
    transition: all 0.3s ease;
    font-size: 0.95rem;
    letter-spacing: 0.2px;
}

.auth-form textarea {
    min-height: 120px;
    resize: vertical;
}

.auth-form input:focus,
.auth-form textarea:focus {
    border-color: var(--auth-accent-light);
    box-shadow: 0 0 10px rgba(0, 120, 255, 0.25);
    outline: none;
    background: #fff;
}

body.dark .auth-form input,
body.dark .auth-form textarea {
    background: rgba(20, 25, 33, 0.85);
    border: 1px solid var(--auth-border-dark);
    color: var(--auth-text-main-dark);
}

body.dark .auth-form input:focus,
body.dark .auth-form textarea:focus {
    border-color: var(--auth-accent-dark);
    box-shadow: 0 0 10px rgba(0, 120, 255, 0.45);
    background: rgba(18, 22, 29, 0.95);
}

.auth-form .input-wrapper::before {
    content: "🔹";
    position: absolute;
    top: 50%;
    left: 0.85rem;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--auth-accent-light);
    opacity: 0.8;
    pointer-events: none;
}

body.dark .auth-form .input-wrapper::before {
    color: var(--auth-accent-dark);
}

.auth-form .input-wrapper[data-icon="user"]::before { content: "👤"; }
.auth-form .input-wrapper[data-icon="email"]::before { content: "📧"; }
.auth-form .input-wrapper[data-icon="password"]::before { content: "🔒"; }
.auth-form .input-wrapper[data-icon="phone"]::before { content: "📱"; }
.auth-form .input-wrapper[data-icon="nik"]::before { content: "🪪"; }
.auth-form .input-wrapper[data-icon="home"]::before { content: "🏠"; }
.auth-form .input-wrapper[data-icon="username"]::before { content: "🆔"; }

.auth-form .form-helper {
    font-size: 0.82rem;
    color: var(--auth-text-muted-light);
    line-height: 1.5;
}

body.dark .auth-form .form-helper {
    color: var(--auth-text-muted-dark);
}

.auth-form button {
    width: 100%;
    position: relative;
    background: linear-gradient(135deg, var(--auth-accent-light), var(--auth-accent-hover-light));
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 0.9rem 1rem;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.3px;
    margin-top: 0.2rem;
    box-shadow: 0 4px 12px rgba(0, 120, 255, 0.28);
    cursor: pointer;
}

.auth-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 120, 255, 0.4);
}

body.dark .auth-form button {
    background: linear-gradient(135deg, var(--auth-accent-dark), var(--auth-accent-hover-dark));
    box-shadow: 0 4px 16px rgba(0, 120, 255, 0.35);
}

.auth-form .btn-success {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.auth-form .btn-success:hover {
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.38);
}

.auth-form .link {
    display: inline-block;
    text-align: center;
    color: var(--auth-accent-light);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.75rem;
    text-decoration: none;
}

.auth-form .link:hover {
    color: var(--auth-accent-hover-light);
}

body.dark .auth-form .link {
    color: var(--auth-accent-dark);
}

.auth-alert {
    border-radius: 14px;
    padding: 1rem 1.25rem;
    font-size: 0.88rem;
    line-height: 1.6;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(0, 120, 255, 0.12);
    color: var(--auth-text-muted-light);
    margin-top: 0.5rem;
}

body.dark .auth-alert {
    background: rgba(26, 31, 41, 0.85);
    border-color: rgba(0, 120, 255, 0.2);
    color: var(--auth-text-muted-dark);
}

.auth-checkbox {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--auth-text-muted-light);
}

body.dark .auth-checkbox {
    color: var(--auth-text-muted-dark);
}

.auth-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    border: 1px solid var(--auth-border-light);
    accent-color: var(--auth-accent-light);
    background: rgba(255, 255, 255, 0.95);
}

body.dark .auth-checkbox input[type="checkbox"] {
    border-color: var(--auth-border-dark);
    background: rgba(26, 31, 41, 0.7);
    accent-color: var(--auth-accent-dark);
}

.auth-form .small-text {
    font-size: 0.85rem;
    color: var(--auth-text-muted-light);
}

body.dark .auth-form .small-text {
    color: var(--auth-text-muted-dark);
}

.auth-form .flex-between {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}


/* Base: Mobile (small phones) */
@media (max-width: 479px) {
    body.auth-page {
        padding: 1.25rem 0.75rem;
        align-items: flex-start;
    }

    .auth-wrapper {
        flex-direction: column;
        max-width: 100%;
        border-radius: 12px;
        box-shadow: 0 8px 24px var(--auth-shadow-light);
        gap: 1.5rem;
    }

    body.dark .auth-wrapper {
        box-shadow: 0 8px 24px var(--auth-shadow-dark);
    }

    .auth-info {
        padding: 1.75rem 1.5rem;
        min-height: auto;
    }

    .auth-info h1 {
        font-size: 1.55rem;
    }

    .auth-info p {
        font-size: 0.9rem;
    }

    .auth-quick-info {
        gap: 1.1rem;
    }

    .auth-form {
        padding: 1.75rem 1.5rem;
    }

    .auth-form-inner {
        gap: 1.25rem;
    }

    .auth-form h2 {
        font-size: 1.65rem;
    }

    .auth-form .welcome-text {
        font-size: 0.95rem;
    }

    .auth-form button {
        padding: 0.85rem 1rem;
        font-size: 0.95rem;
    }

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

    .auth-form .form-grid.two-cols .two-span {
        grid-column: span 1;
    }

    .auth-form .flex-between {
        align-items: flex-start;
        gap: 0.6rem;
    }

    .auth-alert {
        font-size: 0.83rem;
    }
}

/* Phones (standard) */
@media (min-width: 480px) and (max-width: 767px) {
    body.auth-page {
        padding: 1.5rem 1rem;
        align-items: flex-start;
    }

    .auth-wrapper {
        flex-direction: column;
        max-width: 640px;
        border-radius: 14px;
        gap: 1.75rem;
    }

    .auth-info {
        padding: 2.25rem 2rem;
        min-height: auto;
    }

    .auth-info h1 {
        font-size: 1.75rem;
    }

    .auth-form {
        padding: 2.25rem 2rem;
    }

    .auth-form h2 {
        font-size: 1.75rem;
    }

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

    .auth-form .form-grid.two-cols .two-span {
        grid-column: span 1;
    }

    .auth-form .flex-between {
        align-items: flex-start;
    }
}

/* Tablets & small foldables */
@media (min-width: 768px) and (max-width: 1023px) {
    body.auth-page {
        padding: 2rem 1.5rem;
        align-items: center;
    }

    .auth-wrapper {
        flex-direction: row;
        max-width: 960px;
        border-radius: 16px;
    }

    .auth-info {
        padding: 2.75rem 2.5rem;
        min-height: 100%;
    }

    .auth-form {
        padding: 2.75rem 2.5rem;
    }

    .auth-form .form-grid.two-cols {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .auth-form .form-grid.two-cols .two-span {
        grid-column: span 2;
    }

    .auth-form .flex-between {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

/* Small desktops / large tablets */
@media (min-width: 1024px) and (max-width: 1439px) {
    body.auth-page {
        padding: 2.5rem 2rem;
    }

    .auth-wrapper {
        max-width: 1120px;
    }

    .auth-info,
    .auth-form {
        padding: 3rem;
    }
}

/* Large desktops / extra wide screens */
@media (min-width: 1440px) {
    body.auth-page {
        padding: 3rem 3.5rem;
    }

    .auth-wrapper {
        max-width: 1280px;
        border-radius: 22px;
        box-shadow: 0 16px 48px var(--auth-shadow-light);
    }

    body.dark .auth-wrapper {
        box-shadow: 0 16px 48px var(--auth-shadow-dark);
    }

    .auth-info,
    .auth-form {
        padding: 3.5rem;
    }

    .auth-form h2 {
        font-size: 2rem;
    }

    .auth-form .welcome-text {
        font-size: 1.05rem;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

* {
    transition: color 0.25s ease, background-color 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
}

body.auth-page::-webkit-scrollbar {
    width: 8px;
}

body.auth-page::-webkit-scrollbar-thumb {
    background-color: rgba(100, 100, 120, 0.35);
    border-radius: 6px;
}

body.auth-page::-webkit-scrollbar-thumb:hover {
    background-color: rgba(100, 100, 120, 0.55);
}