:root {
    --background: 260 20% 97%;
    --foreground: 221 39% 11%;
    --primary: 265 100% 50%;
    --secondary: 268 100% 59%;
    --muted: 220 9% 46%;
    --destructive: 0 84% 60%;
    --border: 220 14% 90%;
    --card: 0 0% 100%;
    --shadow-sm: 0 8px 20px rgba(17, 24, 39, 0.08);
    --shadow-md: 0 18px 40px rgba(106, 0, 255, 0.16);
    --shadow-lg: 0 28px 70px rgba(17, 24, 39, 0.18);
    --transition-fast: 160ms ease;
    --transition-smooth: 260ms ease;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
}

.dark {
    --background: 222 47% 7%;
    --foreground: 220 20% 96%;
    --primary: 268 100% 68%;
    --secondary: 265 100% 58%;
    --muted: 220 12% 70%;
    --border: 222 25% 18%;
    --card: 222 35% 12%;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: radial-gradient(circle at top, rgba(142, 45, 255, 0.25), transparent 36%), hsl(var(--background));
    color: hsl(var(--foreground));
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: max(20px, env(safe-area-inset-top)) 20px max(20px, env(safe-area-inset-bottom));
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: 28px;
    border-radius: var(--radius-lg);
    background: hsl(var(--card));
    box-shadow: var(--shadow-lg);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: hsl(var(--foreground));
    font-weight: 800;
    text-decoration: none;
    font-size: 1.2rem;
}

.brand-mark {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    color: white;
    border-radius: 14px;
    background: linear-gradient(135deg, #6A00FF, #8E2DFF);
}

h1 {
    margin: 30px 0 8px;
    font-size: 2rem;
}

.subtitle,
.error {
    color: hsl(var(--muted));
}

.field {
    margin-top: 18px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
}

.input-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 56px;
    padding: 0 14px;
    border: 1px solid hsl(var(--border));
    border-radius: 16px;
    background: hsl(var(--background));
}

.input-wrap:focus-within {
    border-color: hsl(var(--primary));
    box-shadow: 0 0 0 4px rgba(106, 0, 255, 0.12);
}

input {
    width: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    font-size: max(16px, 1rem);
    font-family: inherit;
}

.toggle-password {
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
    color: hsl(var(--muted));
}

.error {
    min-height: 24px;
    color: hsl(var(--destructive));
    font-weight: 700;
}

.login-btn {
    width: 100%;
    min-height: 54px;
    border: 0;
    border-radius: 999px;
    color: white;
    cursor: pointer;
    font-weight: 800;
    font-size: 1rem;
    background: linear-gradient(135deg, #6A00FF, #8E2DFF);
    box-shadow: var(--shadow-md);
}

.demo-box {
    display: grid;
    gap: 4px;
    margin-top: 20px;
    padding: 16px;
    border-radius: 18px;
    background: rgba(106, 0, 255, 0.08);
    color: hsl(var(--primary));
}