:root {
    --bg: #eef2ff;
    --surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #475569;
    --line: #cbd5e1;
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --error-bg: #fff1f2;
    --error-border: #fda4af;
    --error-text: #be123c;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Arial", sans-serif;
    color: var(--text-main);
    min-height: 100vh;
    background: radial-gradient(circle at 10% 20%, #dbeafe 0%, #eef2ff 40%, #f8fafc 100%);
}

.page-bg {
    position: fixed;
    inset: 0;
    background:
        linear-gradient(120deg, rgba(79, 70, 229, 0.08), rgba(15, 23, 42, 0.03)),
        radial-gradient(circle at 90% 10%, rgba(79, 70, 229, 0.14), transparent 30%);
    pointer-events: none;
}

.layout {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    width: min(1040px, 92%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 20px;
    align-items: center;
    padding: 20px 0;
}

.brand-panel {
    padding: 18px;
}

.brand-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.brand-logo {
    width: 66px;
    height: 66px;
    object-fit: contain;
}

.brand-header h1 {
    margin: 0;
    font-size: clamp(1.35rem, 2vw, 2.2rem);
    line-height: 1.2;
}

.brand-header p {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: clamp(0.95rem, 1.4vw, 1.1rem);
    font-style: italic;
}

.brand-copy {
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 18px;
    padding: 18px;
    backdrop-filter: blur(2px);
}

.brand-copy h2 {
    margin: 0 0 10px;
    font-size: clamp(1.05rem, 1.7vw, 1.25rem);
}

.brand-copy p {
    margin: 0;
    color: var(--text-muted);
    line-height: 1.5;
    font-size: 0.98rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.10);
    padding: 22px;
}

.badge {
    display: inline-flex;
    align-items: center;
    background: #e0e7ff;
    color: #3730a3;
    font-weight: 700;
    border-radius: 999px;
    font-size: 0.75rem;
    padding: 5px 9px;
}

.card-top h3 {
    margin: 8px 0 6px;
    font-size: clamp(1.2rem, 1.9vw, 1.4rem);
}

.card-top p {
    margin: 0 0 14px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.error {
    margin-bottom: 10px;
    border: 1px solid var(--error-border);
    background: var(--error-bg);
    color: var(--error-text);
    border-radius: 10px;
    padding: 9px 11px;
    font-size: 0.9rem;
}

.form {
    display: grid;
    gap: 8px;
}

.form label {
    font-size: 0.88rem;
    font-weight: 700;
}

.input-group {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
}

.form input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 11px;
    padding: 11px 13px;
    font-size: 0.98rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-group > input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-suffix {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    border: 1px solid var(--line);
    border-left: 0;
    border-radius: 0 11px 11px 0;
    padding: 0 12px;
    font-weight: 700;
    color: var(--text-muted);
    background: #f8fafc;
    font-size: 0.9rem;
}

.field-help {
    margin-top: -2px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.captcha-wrap {
    margin-top: 2px;
    min-height: 0;
}

.captcha-wrap .g-recaptcha {
    display: block;
}

.form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

.password-wrap {
    position: relative;
}

.password-wrap button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: var(--primary);
    font-weight: 700;
    cursor: pointer;
    padding: 4px 5px;
    font-size: 0.92rem;
}

.forgot-link {
    justify-self: end;
    margin-top: -2px;
    margin-bottom: 2px;
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

.submit {
    margin-top: 6px;
    border: none;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    padding: 11px 14px;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(79, 70, 229, 0.34);
}

@media (max-width: 980px) {
    .layout {
        grid-template-columns: 1fr;
        width: min(680px, 94%);
        gap: 12px;
        padding: 14px 0;
    }

    .brand-panel {
        padding: 6px 2px 0;
    }

    .brand-copy {
        padding: 14px 16px;
    }

    .card {
        padding: 18px;
    }
}

@media (max-width: 600px) {
    .layout {
        width: 94%;
        gap: 10px;
        padding: 10px 0 14px;
    }

    .brand-header {
        align-items: flex-start;
        gap: 10px;
    }

    .brand-logo {
        width: 52px;
        height: 52px;
    }

    .brand-header h1 {
        font-size: 1.05rem;
        line-height: 1.18;
    }

    .brand-header p {
        margin-top: 4px;
        font-size: 0.88rem;
    }

    .brand-copy {
        border-radius: 14px;
        padding: 12px 14px;
    }

    .brand-copy h2 {
        margin-bottom: 6px;
        font-size: 0.98rem;
    }

    .brand-copy p {
        font-size: 0.86rem;
        line-height: 1.4;
    }

    .card {
        padding: 14px;
        border-radius: 14px;
    }

    .card-top h3 {
        font-size: 1.05rem;
    }

    .card-top p {
        font-size: 0.88rem;
        margin-bottom: 10px;
    }

    .form label {
        font-size: 0.82rem;
    }

    .form input {
        padding: 10px 12px;
        font-size: 0.92rem;
        border-radius: 10px;
    }

    .input-group > input {
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
    }

    .input-suffix {
        border-radius: 0 10px 10px 0;
        padding: 0 8px;
        font-size: 0.78rem;
    }

    .field-help {
        font-size: 0.72rem;
    }

    .password-wrap button {
        font-size: 0.84rem;
    }

    .forgot-link {
        font-size: 0.76rem;
    }

    .submit {
        padding: 10px 12px;
        font-size: 0.94rem;
    }
}

@media (max-width: 420px) {
    .brand-copy {
        display: none;
    }

    .badge {
        font-size: 0.7rem;
    }

    .input-group {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .input-group > input {
        border-radius: 10px;
    }

    .input-suffix {
        justify-self: start;
        border-left: 1px solid var(--line);
        border-radius: 999px;
        padding: 4px 8px;
        min-height: 0;
    }

    .error {
        font-size: 0.84rem;
    }
}