:root {
    --brand-500: #ff8c00;
    --brand-600: #f06c00;
    --brand-700: #c95400;
    --brand-accent: #ff8c00;
    --brand-accent-hover: #f47f00;
    --brand-accent-ink: #2b1600;
    --ink-900: #111827;
    --ink-700: #374151;
    --ink-500: #6b7280;
    --surface: rgba(255, 255, 255, 0.92);
    --border: rgba(17, 24, 39, 0.15);
    --error: #dc2626;
    --error-bg: #fef2f2;
    --success: #15803d;
    --success-bg: #ecfdf3;
    --shadow-lg: 0 30px 80px rgba(17, 24, 39, 0.22);
    --shadow-md: 0 16px 40px rgba(17, 24, 39, 0.16);
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', 'Segoe UI', sans-serif;
    color: var(--ink-900);
    background-color: #202630;
    background-image: url('/imgs/background-plans.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow-x: clip;
}

.auth-container {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: clamp(1rem, 2.5vw, 2.3rem);
    position: relative;
    width: 100%;
    overflow-x: clip;
}

.btn-back-to-plans {
    position: fixed;
    top: 1.2rem;
    left: 1.2rem;
    z-index: 40;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.62rem 1.05rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 700;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.55);
    backdrop-filter: blur(8px);
    transition: transform 0.18s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn-back-to-plans:hover {
    transform: translateX(-2px);
    background: rgba(17, 24, 39, 0.72);
    border-color: rgba(255, 255, 255, 0.68);
}

.btn-back-to-plans svg {
    width: 17px;
    height: 17px;
}

.auth-wrapper {
    width: 100%;
    max-width: 920px;
    min-width: 0;
    height: min(650px, 100%);
    display: grid;
    grid-template-columns: 1.02fr 1fr;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: var(--surface);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-lg);
    max-width: 100%;
}

.auth-info {
    position: relative;
    padding: clamp(2rem, 3vw, 3rem);
    background: linear-gradient(155deg, #ff9f2f, #f06c00);
    color: #ffffff;
    display: flex;
    align-items: center;
}

.auth-info::before,
.auth-info::after {
    content: '';
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}

.auth-info::before {
    width: 220px;
    height: 220px;
    right: -80px;
    top: -90px;
    background: rgba(255, 255, 255, 0.18);
}

.auth-info::after {
    width: 170px;
    height: 170px;
    left: -55px;
    bottom: -72px;
    background: rgba(255, 255, 255, 0.12);
}

.info-content {
    position: relative;
    z-index: 1;
    max-width: 420px;
}

.logo {
    margin-bottom: 1.8rem;
}

.logo img {
    width: clamp(148px, 20vw, 220px);
    height: auto;
    display: block;
}

.info-content h1 {
    margin: 0;
    font-size: clamp(1.5rem, 1.15rem + 1vw, 2.15rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.info-content p {
    margin: 0.9rem 0 1.35rem;
    font-size: clamp(0.9rem, 0.85rem + 0.25vw, 1.04rem);
    line-height: 1.6;
    opacity: 0.95;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 0.72rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.check-icon {
    width: 19px;
    height: 19px;
    border-radius: 999px;
    border: 1.7px solid rgba(255, 255, 255, 0.86);
    position: relative;
    flex-shrink: 0;
}

.check-icon::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.auth-form-container {
    padding: clamp(1.35rem, 2.6vw, 2.6rem);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    min-width: 0;
}

.auth-form-wrapper {
    width: min(460px, 100%);
    min-width: 0;
    max-width: 100%;
}

.auth-form,
.form-group,
.password-wrapper {
    min-width: 0;
    max-width: 100%;
}

.form-header {
    margin-bottom: 1.35rem;
}

.form-header h1 {
    margin: 0;
    color: var(--ink-900);
    font-size: clamp(1.4rem, 1.15rem + 0.6vw, 1.85rem);
    letter-spacing: -0.02em;
}

.form-header p {
    margin: 0.4rem 0 0;
    color: var(--ink-500);
    font-size: 0.9rem;
}

.alert {
    border-radius: 12px;
    border: 1px solid transparent;
    padding: 0.75rem 0.85rem;
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    font-size: 0.87rem;
    line-height: 1.45;
    margin-bottom: 1rem;
}

.alert svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-error {
    background: var(--error-bg);
    border-color: rgba(220, 38, 38, 0.25);
    color: var(--error);
}

.alert-success {
    background: var(--success-bg);
    border-color: rgba(21, 128, 61, 0.25);
    color: var(--success);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.42rem;
    color: var(--ink-700);
    font-size: 0.83rem;
    font-weight: 700;
}

.form-control {
    width: 100%;
    border: 1px solid rgba(17, 24, 39, 0.17);
    border-radius: 12px;
    background: #ffffff;
    color: var(--ink-900);
    padding: 0.72rem 0.82rem;
    font-size: 0.93rem;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
    display: block;
    max-width: 100%;
}

select.form-control {
    appearance: none;
    background-image:
        linear-gradient(45deg, transparent 50%, #9ca3af 50%),
        linear-gradient(135deg, #9ca3af 50%, transparent 50%);
    background-position:
        calc(100% - 16px) calc(50% - 3px),
        calc(100% - 11px) calc(50% - 3px);
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    padding-right: 2.2rem;
}

.form-control:focus {
    outline: none;
    border-color: rgba(240, 108, 0, 0.7);
    box-shadow: 0 0 0 4px rgba(255, 140, 0, 0.15);
}

.form-control.error {
    border-color: rgba(220, 38, 38, 0.7);
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

.password-wrapper {
    position: relative;
}

.password-wrapper .form-control {
    padding-right: 2.55rem;
}

.toggle-password {
    position: absolute;
    right: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    color: #9ca3af;
    cursor: pointer;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.16s ease, background 0.16s ease;
}

.toggle-password:hover {
    color: var(--brand-600);
    background: rgba(255, 140, 0, 0.12);
}

.error-message {
    margin-top: 0.35rem;
    color: var(--error);
    font-size: 0.78rem;
    font-weight: 600;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.82rem;
    color: var(--ink-500);
    cursor: pointer;
}

.checkbox-label input[type='checkbox'] {
    width: 17px;
    height: 17px;
    margin: 0;
    accent-color: var(--brand-500);
    cursor: pointer;
}

.checkbox-label.terms {
    align-items: flex-start;
}

.checkbox-label.terms span {
    line-height: 1.45;
}

.checkbox-label.terms a {
    color: var(--brand-600);
    text-decoration: none;
    font-weight: 700;
}

.checkbox-label.terms a:hover {
    color: var(--brand-700);
    text-decoration: underline;
}

.forgot-link {
    color: var(--brand-600);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 700;
}

.forgot-link:hover {
    color: var(--brand-700);
    text-decoration: underline;
}

.btn-submit {
    appearance: none;
    border: none;
    border-radius: 12px;
    width: 100%;
    margin-top: 0.2rem;
    padding: 0.82rem 1rem;
    font-size: 0.94rem;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--brand-accent-ink);
    cursor: pointer;
    background: var(--brand-accent);
    box-shadow: 0 14px 26px rgba(240, 108, 0, 0.3);
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn-submit:hover {
    transform: translateY(-1px);
    background: var(--brand-accent-hover);
    box-shadow: 0 16px 30px rgba(240, 108, 0, 0.34);
}

.form-footer {
    margin-top: 0.45rem;
    text-align: center;
    color: var(--ink-500);
    font-size: 0.86rem;
}

.form-footer a {
    color: var(--brand-600);
    text-decoration: none;
    font-weight: 700;
}

.form-footer a:hover {
    color: var(--brand-700);
    text-decoration: underline;
}

@media (max-width: 1024px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
    }

    .auth-info {
        padding: 1.5rem 1.4rem;
    }

    .info-content {
        max-width: none;
    }

    .auth-form-container {
        padding-top: 1.3rem;
    }
}

@media (max-width: 768px) {
    .auth-container {
        padding: 0.85rem;
        align-items: start;
        justify-items: center;
    }

    .auth-info {
        display: none;
    }

    .btn-back-to-plans {
        position: static;
        margin-bottom: 0.65rem;
    }

    .auth-wrapper {
        border-radius: 18px;
        height: auto;
        overflow: visible;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .auth-container {
        padding: 0.7rem;
    }

    .auth-form-container {
        padding: 1.05rem;
    }

    .btn-back-to-plans {
        width: auto;
        max-width: 100%;
        justify-content: center;
    }

    .form-header h1 {
        font-size: 1.28rem;
    }

    .form-header p {
        font-size: 0.84rem;
    }

    .form-control {
        font-size: 0.9rem;
    }

    .btn-submit {
        font-size: 0.9rem;
    }
}

@media (max-height: 820px) and (min-width: 769px) {
    .auth-container {
        place-items: start center;
        padding-top: 4.4rem;
        padding-bottom: 1.2rem;
    }

    .btn-back-to-plans {
        top: 0.85rem;
    }

    .auth-info,
    .auth-form-container {
        padding-top: 1.1rem;
        padding-bottom: 1.1rem;
    }
}