:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #eef2ff;
    --bg-main: #f3f4f6;
    --bg-card: #ffffff;
    --text-heading: #111827;
    --text-body: #374151;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
    padding: 20px;
}

.auth-container {
    background: var(--bg-card);
    width: 100%;
    max-width: 440px;
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    border-radius: 16px;
    margin: 0 auto 16px;
}

.auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: #f9fafb;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px var(--primary-light);
}

.password-wrapper {
    position: relative;
}

.eye-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
}

.forgot-link {
    display: block;
    text-align: right;
    font-size: 14px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 24px;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-submit:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.auth-footer {
    text-align: center;
    margin-top: 32px;
    font-size: 14px;
    color: var(--text-muted);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ── Mobile Responsive Optimizations for Auth ──────────────── */
@media (max-width: 480px) {
    body {
        padding: 12px;
    }
    .auth-container {
        padding: 28px 20px;
        border-radius: 18px;
    }
    .auth-header h1 {
        font-size: 20px;
    }
    .logo-icon {
        width: 52px;
        height: 52px;
        font-size: 22px;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}