:root {
    --pink:    #ff1f5b;
    --purple:  #7b1fa2;
    --blue:    #2196f3;
    --grad:    linear-gradient(135deg, #ff1f5b 0%, #7b1fa2 50%, #2196f3 100%);
    --dark:    #1a1d2e;
    --gray:    #6b7280;
    --gray-l:  #f3f4f6;
    --bg:      #ffffff;
    --shadow:  0 10px 30px rgba(31, 35, 56, 0.12);
    --radius:  14px;
}

* { box-sizing: border-box; }
html, body {
    margin: 0; padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--dark);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

.bg-grad {
    min-height: 100vh;
    background: #292D36;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 36px 32px;
    text-align: center;
}
.login-card .logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 8px;
}
.login-card h1 {
    margin: 4px 0 4px;
    font-size: 22px;
    font-weight: 600;
}
.login-card .lead {
    color: var(--gray);
    margin: 0 0 24px;
    font-size: 14px;
}

.alert {
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 16px;
    text-align: left;
}
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-info  { background: #dbeafe; color: #1e40af; }

form label {
    display: block;
    margin-bottom: 14px;
    text-align: left;
}
form label > span {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--dark);
    margin-bottom: 6px;
}
form input[type="text"],
form input[type="password"] {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    font-size: 15px;
    transition: border .15s, box-shadow .15s;
    background: #fff;
}
form input[type="text"]:focus,
form input[type="password"]:focus {
    outline: none;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(33,150,243,0.18);
}
form .check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 22px;
}
form .check span { font-weight: normal; }
form .check input { width: auto; }

.btn-primary {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: var(--grad);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .3px;
    cursor: pointer;
    transition: transform .08s, box-shadow .15s;
}
.btn-primary:hover {
    box-shadow: 0 8px 22px rgba(123, 31, 162, 0.35);
}
.btn-primary:active { transform: translateY(1px); }

.foot {
    position: fixed;
    bottom: 12px;
    left: 0; right: 0;
    text-align: center;
    color: rgba(255,255,255,.85);
    font-size: 12px;
}

/* Topbar interno */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 28px;
    background: #fff;
    border-bottom: 1px solid var(--gray-l);
    box-shadow: 0 1px 4px rgba(0,0,0,.04);
}
.topbar .logo-sm { height: 36px; }
.topbar nav a {
    margin-left: 22px;
    color: var(--dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}
.topbar nav a:hover { color: var(--blue); }
.topbar nav a.logout { color: var(--pink); }

.container {
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 28px;
}
.container h1 { margin-top: 0; }
.muted { color: var(--gray); }
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    margin-top: 24px;
}
.card {
    background: #fff;
    border: 1px solid var(--gray-l);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 2px 8px rgba(31,35,56,.05);
}
.card h3 { margin: 0 0 8px; font-size: 14px; color: var(--gray); text-transform: uppercase; letter-spacing: .5px; }
.card .big { margin: 0; font-size: 22px; font-weight: 600; color: var(--dark); }