/* ===== RESPONSIVE VARIABLES ===== */
:root {
    /* Responsive Spacing Scale (Desktop) */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Responsive Font Sizes (Desktop) */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    --font-5xl: 3rem;
}

/* Mobile (375px - 480px): Apply reduced spacing */
@media (max-width: 480px) {
    :root {
        --spacing-2xl: 1.5rem;
        --spacing-3xl: 2rem;
        --font-4xl: 1.75rem;
        --font-5xl: 2.25rem;
    }
}

/* Tablet (481px - 768px): Intermediate spacing */
@media (min-width: 481px) and (max-width: 768px) {
    :root {
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --font-4xl: 2rem;
        --font-5xl: 2.5rem;
    }
}

/* Desktop (769px+): Full spacing */
@media (min-width: 769px) {
    :root {
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
        --font-4xl: 2.25rem;
        --font-5xl: 3rem;
    }
}

.auth-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: transparent;
    padding: 0;
    margin: 0;
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.auth-box {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.auth-box h1 {
    color: #0066cc;
    font-size: 1.25rem;
    margin: 0 0 0.25rem 0;
    text-align: center;
}

.auth-box h2 {
    color: #333;
    font-size: 1.125rem;
    text-align: center;
    margin: 1rem 0;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 0.75rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    color: #333;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.btn {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #0066cc;
    color: white;
}

.btn-primary:hover {
    background-color: #004399;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
}

.auth-footer p {
    color: #666;
    font-size: 0.875rem;
    margin: 0.5rem 0;
}

.auth-footer a {
    color: #0066cc;
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-danger {
    background-color: #fee;
    border: 1px solid #fcc;
    color: #c33;
}

.alert-success {
    background-color: #efe;
    border: 1px solid #cfc;
    color: #3c3;
}

.alert a {
    color: inherit;
    font-weight: 600;
}

/* ===== RESPONSIVE MOBILE (max-width: 480px) ===== */
@media (max-width: 480px) {
    .auth-body {
        padding: 0.5rem;
    }

    .auth-container {
        padding: 0.5rem;
    }

    .auth-box {
        padding: 1rem;
        border-radius: 6px;
    }

    .auth-box h1 {
        font-size: 1.125rem;
        margin-bottom: 0.125rem;
    }

    .auth-box h2 {
        font-size: 1rem;
        margin: 0.75rem 0;
        padding-bottom: 0.5rem;
    }

    .form-group {
        margin-bottom: 0.75rem;
    }

    .form-group label {
        margin-bottom: 0.3rem;
        font-size: 0.8125rem;
    }

    .form-group input,
    .form-group select {
        padding: 0.65rem;
        font-size: 0.95rem;
    }

    .btn {
        padding: 0.85rem;
        font-size: 1rem;
        min-height: 48px;
    }

    .auth-footer {
        margin-top: 1rem;
        padding-top: 0.75rem;
    }

    .auth-footer p {
        font-size: 0.8125rem;
        margin: 0.4rem 0;
    }

    .alert {
        padding: 0.65rem 0.875rem;
        margin-bottom: 0.75rem;
        font-size: 0.8rem;
    }
}

/* ===== RESPONSIVE TABLET (481px - 768px) ===== */
@media (min-width: 481px) and (max-width: 768px) {
    .auth-container {
        padding: 1rem;
    }

    .auth-box {
        padding: 1.75rem;
    }

    .auth-box h1 {
        font-size: 1.25rem;
    }

    .auth-box h2 {
        font-size: 1.125rem;
    }
}

/* ===== RESPONSIVE DESKTOP (769px+) ===== */
@media (min-width: 769px) {
    .auth-container {
        padding: 2rem;
    }

    .auth-box {
        padding: 2.5rem;
    }

    .auth-box h1 {
        font-size: 1.5rem;
        margin-bottom: 0.5rem;
    }

    .auth-box h2 {
        font-size: 1.375rem;
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .form-group input,
    .form-group select {
        padding: 0.875rem;
    }

    .btn {
        padding: 0.875rem;
        font-size: 1.0625rem;
    }

    .auth-footer {
        margin-top: 2rem;
        padding-top: 1.5rem;
    }
}