@import url('https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&display=swap');

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #fafafa;
    --fg: #0f0f0f;
    --card: #fff;
    --border: #e4e4e7;
    --input: #e4e4e7;
    --ring: #18181b;
    --muted: #f4f4f5;
    --muted-fg: #71717a;
    --primary: #18181b;
    --primary-fg: #fafafa;
    --accent: #f4f4f5;
    --radius: 0.5rem;
    --radius-sm: 0.375rem;
    --radius-lg: 0.75rem;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 5%);
    --shadow: 0 1px 3px rgb(0 0 0 / 10%), 0 1px 2px -1px rgb(0 0 0 / 10%);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 10%), 0 2px 4px -2px rgb(0 0 0 / 10%);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 10%), 0 4px 6px -4px rgb(0 0 0 / 10%);
    --ease: 150ms cubic-bezier(.4, 0, .2, 1);
    --destructive: #ef4444;
    --error-bg: #fef2f2;
    --error-text: #dc2626;
    --error-border: #fecaca;
    --success-bg: #f0fdf4;
    --success-text: #16a34a;
    --success-border: #bbf7d0;
}

html, body {
    height: 100%;
    font-family: 'DM Sans', system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle, #d4d4d8 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

.page-container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2rem 2rem 2.25rem;
    width: 100%;
    max-width: 380px;
    animation: card-in 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes card-in {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.card-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.75rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.logo-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: var(--primary);
    margin-bottom: 0.25rem;
}

.logo-wrap svg {
    width: 22px;
    height: 22px;
    color: var(--primary-fg);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--fg);
}

.card-desc {
    font-size: 0.8125rem;
    color: var(--muted-fg);
    text-align: center;
    line-height: 1.4;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.field label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fg);
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrap input {
    padding-right: 2.5rem;
}

input[type='text'],
input[type='email'],
input[type='password'] {
    background: var(--card);
    border: 1px solid var(--input);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-family: 'DM Sans', system-ui, sans-serif;
    color: var(--fg);
    width: 100%;
    outline: none;
    transition: border-color var(--ease), box-shadow var(--ease);
}

input::placeholder {
    color: var(--muted-fg);
}

input:focus {
    border-color: var(--ring);
    box-shadow: 0 0 0 2px rgb(24 24 27 / 8%);
}

.btn-submit {
    margin-top: 0.25rem;
    width: 100%;
    padding: 0.5625rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: 'DM Sans', system-ui, sans-serif;
    color: var(--primary-fg);
    background: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--ease), box-shadow var(--ease), transform 0.15s;
    letter-spacing: 0.01em;
}

.btn-submit:hover {
    background: #27272a;
}

.btn-submit:active {
    transform: scale(0.98);
}

.eye-btn {
    position: absolute;
    right: 0.625rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    color: var(--muted-fg);
    transition: color var(--ease);
    font-family: inherit;
}

.eye-btn:hover {
    color: var(--fg);
}

.eye-icon {
    width: 16px;
    height: 16px;
}

.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    line-height: 1.4;
    margin-top: 0.875rem;
    border: 1px solid transparent;
    animation: fade-in 0.2s ease both;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(-3px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert.error {
    background: var(--error-bg);
    border-color: var(--error-border);
    color: var(--error-text);
}

.alert.success {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.divider {
    position: relative;
    text-align: center;
    margin: 1.25rem 0 1rem;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.divider span {
    position: relative;
    background: var(--card);
    padding: 0 0.625rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted-fg);
    font-weight: 500;
}

.register-link {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--muted-fg);
}

.register-link a {
    color: var(--fg);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--ease);
}

.register-link a:hover {
    text-decoration: underline;
}