:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --bg: #f1f5f9;
    --sidebar: #0f172a;
    --sidebar-hover: #1e293b;
    --text: #0f172a;
    --muted: #64748b;
    --danger: #ef4444;
    --radius: 10px;
}

/* RESET */
* {
    box-sizing: border-box;
}

/* BODY */
body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* ================= LOGIN ================= */

.login-page {
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #2563eb, #1e40af);
}

.login-box {
    background: #fff;
    padding: 35px;
    width: 320px;
    border-radius: var(--radius);
    box-shadow: 0 20px 40px rgba(0,0,0,.25);
    animation: fadeIn 0.6s ease;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--primary);
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: var(--radius);
    border: 1px solid #cbd5e1;
    font-size: 14px;
}

.login-box input:focus {
    outline: none;
    border-color: var(--primary);
}

.login-box button {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    cursor: pointer;
    transition: background .3s, transform .2s;
}

.login-box button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.error {
    color: var(--danger);
    text-align: center;
    margin-top: 10px;
    font-size: 14px;
}

/* ================= SIDEBAR ================= */

.sidebar {
    width: 230px;
    height: 100vh;
    background: var(--sidebar);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;

    padding: 5px 20px;
    box-shadow: 4px 0 20px rgba(0,0,0,.15);

    overflow-y: auto;              /* 🔥 resolve a sobreposição */
    overflow-x: hidden;
    box-sizing: border-box;
}

/* Scroll discreto */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.25);
    border-radius: 10px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar h2 {
    text-align: center;
    margin-bottom: 35px;
    font-size: 22px;
    letter-spacing: 1px;
}

.sidebar a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    color: #cbd5e1;
    text-decoration: none;
    border-radius: var(--radius);
    margin-bottom: 10px;
    font-size: 15px;
    transition: background .3s, color .3s, transform .2s;
}

.sidebar a:hover {
    background: var(--sidebar-hover);
    color: #fff;
    transform: translateX(5px);
}


/* USER INFO */
.user-info {
    position: absolute;
    bottom: 25px;
    left: 20px;
    right: 20px;
    padding-top: 15px;
    border-top: 1px solid #334155;
}

.user-info small {
    display: block;
    margin-bottom: 10px;
    color: #94a3b8;
    font-size: 13px;
}

.logout {
    color: var(--danger);
    text-decoration: none;
    font-size: 14px;
}

.logout:hover {
    text-decoration: underline;
}

/* ================= CONTENT ================= */

.content {
    margin-left: 250px;
    padding: 30px;
    animation: fadeIn 0.5s ease;
}

.content h1 {
    margin-top: 0;
    font-size: 28px;
    margin-bottom: 10px;
}

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

/* ================= CARDS (para dashboard futuro) ================= */

.card {
    background: #fff;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,.08);
    margin-bottom: 20px;
}

.card h3 {
    margin-top: 0;
}

/* ================= TABLE ================= */

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,.08);
}

th, td {
    padding: 14px;
    text-align: left;
}

th {
    background: #f8fafc;
    color: var(--muted);
    font-weight: 600;
}

tr:hover {
    background: #f1f5f9;
}

/* ================= BUTTONS ================= */

.btn {
    padding: 10px 14px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

/* ================= ANIMATIONS ================= */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}