:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --border: #e5e7eb;
    --text: #111827;
    --muted: #6b7280;
    --primary: #0ea5a0;
    --primary-dark: #0b8b87;
    --primary-soft: #e6f8f7;
    --danger: #dc2626;
    --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
    --radius-xl: 24px;
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    font-family: var(--font-body);
    background:
        radial-gradient(circle at top right, rgba(14,165,160,0.10), transparent 22%),
        radial-gradient(circle at bottom left, rgba(59,130,246,0.06), transparent 20%),
        var(--bg);
    color: var(--text);
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: 100%;
    max-width: 430px;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.7);
    box-shadow: var(--shadow);
    border-radius: 32px;
    overflow: hidden;
}

.auth-top {
    padding: 28px 28px 18px;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    text-decoration: none;
    color: var(--text);
}

.auth-logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
    font-family: var(--font-display);
}

.auth-logo-text {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
}

.auth-heading {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 4vw, 2.25rem);
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin: 0 0 10px;
}

.auth-subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 0.97rem;
    line-height: 1.55;
}

.auth-form-wrap {
    padding: 8px 28px 28px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text);
}

.input-wrap {
    position: relative;
}

.form-input {
    width: 100%;
    height: 54px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--surface);
    padding: 0 16px 0 46px;
    font-size: 1rem;
    color: var(--text);
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(14,165,160,0.10);
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    pointer-events: none;
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: #94a3b8;
    cursor: pointer;
}

.auth-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 10px 0 22px;
}

.check-row {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 0.92rem;
}

.link-muted {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-btn {
    width: 100%;
    height: 54px;
    border: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 12px 24px rgba(14,165,160,0.22);
}

.auth-btn:hover {
    transform: translateY(-1px);
}

.auth-btn:active {
    transform: translateY(0);
}

.auth-footer-note {
    margin-top: 18px;
    padding: 14px 16px;
    background: var(--primary-soft);
    border-radius: 16px;
    color: #0f766e;
    font-size: 0.92rem;
    line-height: 1.5;
}

.input-error {
    margin-top: 7px;
    font-size: 0.85rem;
    color: var(--danger);
}

.auth-alert {
    margin-bottom: 16px;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 0.92rem;
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

@media (min-width: 900px) {
    .auth-shell {
        grid-template-columns: 1.05fr 430px;
        gap: 48px;
        max-width: 1120px;
        margin: 0 auto;
    }

    .auth-showcase {
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: 24px;
    }

    .showcase-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        width: fit-content;
        padding: 8px 12px;
        border-radius: 999px;
        background: rgba(14,165,160,0.10);
        color: #0f766e;
        font-size: 0.86rem;
        font-weight: 700;
        margin-bottom: 18px;
    }

    .showcase-title {
        font-family: var(--font-display);
        font-size: clamp(2.5rem, 4vw, 4.25rem);
        line-height: 0.95;
        letter-spacing: -0.06em;
        margin: 0 0 16px;
    }

    .showcase-text {
        max-width: 46ch;
        color: var(--muted);
        font-size: 1.02rem;
        line-height: 1.7;
        margin: 0 0 28px;
    }

    .showcase-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
        max-width: 520px;
    }

    .showcase-item {
        padding: 18px;
        border-radius: 22px;
        background: rgba(255,255,255,0.75);
        border: 1px solid rgba(255,255,255,0.85);
        box-shadow: 0 12px 26px rgba(148, 163, 184, 0.10);
    }

    .showcase-item strong {
        display: block;
        margin-bottom: 6px;
        font-size: 1rem;
    }

    .showcase-item span {
        color: var(--muted);
        font-size: 0.92rem;
        line-height: 1.55;
    }
}

@media (max-width: 899px) {
    .auth-showcase {
        display: none;
    }

    .auth-card {
        max-width: 100%;
    }
}