@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@700;900&family=Inter:wght@400;500;600;700&display=swap");

:root {
    --roxo:        #9d50ff;
    --rosa:        #ff6ec7;
    --laranja:     #ff9a56;
    --amarelo:     #ffd93d;
    --verde:       #6bcf7f;
    --azul:        #4facfe;
    --vermelho:    #ff6b9d;
    --texto:       #2d3748;
    --texto2:      #64748b;
    --muted:       #4575b8;
    --bg:          #f0f4ff;
    --bg-card:     #ffffff;
    --border:      #e2e8f0;
    --sidebar-w:   240px;

    --grad-main:   linear-gradient(135deg, var(--roxo), var(--rosa));
    --grad-blue:   linear-gradient(135deg, var(--azul), #00d9ff);
    --grad-green:  linear-gradient(135deg, var(--verde), var(--azul));
    --grad-fire:   linear-gradient(135deg, var(--laranja), var(--rosa));
    --grad-gold:   linear-gradient(135deg, var(--amarelo), var(--laranja));
    --grad-hero:   linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

body {
    font-family: "Inter", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--texto);
    min-height: 100vh;
}

/* Layout admin usa flex no body */
body.admin-layout {
    display: flex;
}

a { color: var(--roxo); text-decoration: none; }
a:hover { color: var(--rosa); }

/* ── SIDEBAR ── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--grad-hero);
    min-height: 100vh;
    position: fixed;
    top: 0; left: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    box-shadow: 4px 0 20px rgba(102,126,234,.25);
    transition: transform .3s;
}

.sidebar-brand {
    padding: 28px 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,.15);
}

.sidebar-brand .title {
    font-family: "Orbitron", sans-serif;
    font-size: 1rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: .06em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-brand .sub {
    font-size: .72rem;
    color: rgba(255,255,255,.6);
    margin-top: 4px;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: 12px;
    color: rgba(255,255,255,.75);
    font-size: .88rem;
    font-weight: 500;
    transition: all .2s;
    white-space: nowrap;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,.15);
    color: #fff;
    transform: translateX(4px);
}

.sidebar-nav a.active {
    background: rgba(255,255,255,.2);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.sidebar-nav a .nav-icon {
    font-size: 1.1rem;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid rgba(255,255,255,.15);
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: 12px;
    color: rgba(255,255,255,.7);
    font-size: .88rem;
    font-weight: 500;
    transition: all .2s;
}

.sidebar-footer a:hover {
    background: rgba(255,100,100,.2);
    color: #ffb3b3;
}

/* ── MAIN CONTENT ── */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 2px 10px rgba(0,0,0,.06);
}

.topbar-title {
    font-family: "Orbitron", sans-serif;
    font-size: .95rem;
    font-weight: 900;
    background: var(--grad-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .88rem;
    color: var(--texto2);
}

.topbar-avatar {
    width: 34px;
    height: 34px;
    background: var(--grad-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: .85rem;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--texto);
    cursor: pointer;
    padding: 4px;
}

/* ── PAGE CONTENT ── */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 32px 60px;
    width: 100%;
}

h1 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.4rem;
    font-weight: 900;
    background: var(--grad-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
    letter-spacing: .03em;
}

h2 {
    font-size: .95rem;
    font-weight: 700;
    color: var(--texto);
    margin-bottom: 18px;
    letter-spacing: .02em;
}

/* ── CARDS ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,.06);
    transition: box-shadow .25s;
}

.card:hover {
    box-shadow: 0 8px 30px rgba(102,126,234,.12);
}

/* ── FORMS ── */
.form-group { margin-bottom: 18px; }

label {
    display: block;
    font-size: .8rem;
    color: var(--texto2);
    margin-bottom: 7px;
    text-transform: uppercase;
    letter-spacing: .07em;
    font-weight: 700;
}

input, select, textarea {
    width: 100%;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--texto);
    padding: 11px 16px;
    font-size: .93rem;
    font-family: "Inter", sans-serif;
    transition: border-color .2s, box-shadow .2s, background .2s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--roxo);
    box-shadow: 0 0 0 3px rgba(157,80,255,.12);
    background: #fff;
}

select option { background: #fff; color: var(--texto); }
textarea { resize: vertical; min-height: 90px; }

/* ── BUTTONS ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 22px;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    font-size: .87rem;
    font-weight: 700;
    font-family: "Inter", sans-serif;
    letter-spacing: .02em;
    transition: transform .15s, box-shadow .2s, opacity .2s;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); opacity: .92; }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--grad-main);
    color: #fff;
    box-shadow: 0 4px 14px rgba(157,80,255,.35);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(157,80,255,.5); color: #fff; }

.btn-blue {
    background: var(--grad-blue);
    color: #fff;
    box-shadow: 0 4px 14px rgba(79,172,254,.3);
}
.btn-blue:hover { color: #fff; }

.btn-green {
    background: var(--grad-green);
    color: #fff;
    box-shadow: 0 4px 14px rgba(107,207,127,.3);
}
.btn-green:hover { color: #fff; }

.btn-orange {
    background: var(--grad-fire);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255,154,86,.3);
}
.btn-orange:hover { color: #fff; }

.btn-secondary {
    background: #fff;
    border: 2px solid var(--border);
    color: var(--texto2);
}
.btn-secondary:hover {
    border-color: var(--roxo);
    color: var(--roxo);
    background: #fff;
}

.btn-danger {
    background: #fff;
    border: 2px solid #fecdd3;
    color: var(--vermelho);
    font-size: .82rem;
    padding: 7px 14px;
}
.btn-danger:hover {
    background: #fff1f2;
    border-color: var(--vermelho);
    color: var(--vermelho);
}

.btn-sm { padding: 6px 14px; font-size: .8rem; }

/* ── TABLE ── */
.table-wrap {
    overflow-x: auto;
    border-radius: 12px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
}

th {
    text-align: left;
    padding: 12px 16px;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
    border-bottom: 2px solid var(--border);
    font-weight: 700;
    background: var(--bg);
}

th:first-child { border-radius: 12px 0 0 0; }
th:last-child  { border-radius: 0 12px 0 0; }

td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-size: .9rem;
    vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(157,80,255,.03); }

/* ── BADGES ── */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .04em;
}

.badge-purple { background: rgba(157,80,255,.12); color: var(--roxo); }
.badge-pink   { background: rgba(255,110,199,.12); color: #e040a0; }
.badge-blue   { background: rgba(79,172,254,.12);  color: #0284c7; }
.badge-green  { background: rgba(107,207,127,.12); color: #16a34a; }
.badge-yellow { background: rgba(255,217,61,.15);  color: #b45309; }
.badge-orange { background: rgba(255,154,86,.12);  color: #c2410c; }

/* ── RANKING ── */
.rank-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 16px;
    margin-bottom: 10px;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 4px 15px rgba(0,0,0,.06);
}

.rank-item:hover {
    transform: translateX(6px);
    box-shadow: 0 8px 25px rgba(102,126,234,.15);
}

.rank-item.rank-1 { border-left: 5px solid var(--amarelo); background: linear-gradient(135deg, #fff 0%, #fffbeb 100%); }
.rank-item.rank-2 { border-left: 5px solid #cbd5e1; }
.rank-item.rank-3 { border-left: 5px solid var(--laranja); background: linear-gradient(135deg, #fff 0%, #fff7ed 100%); }
.rank-item:not(.rank-1):not(.rank-2):not(.rank-3) { border-left: 5px solid var(--roxo); }

.rank-pos {
    font-family: "Orbitron", sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    min-width: 52px;
    text-align: center;
}

.rank-pos.gold   { color: var(--amarelo); }
.rank-pos.silver { color: #94a3b8; }
.rank-pos.bronze { color: var(--laranja); }
.rank-pos.other  { color: var(--muted); font-size: 1.1rem; }

.rank-info { flex: 1; min-width: 0; }
.rank-info strong { display: block; font-size: 1rem; font-weight: 700; color: var(--texto); margin-bottom: 3px; }
.rank-info small  { font-size: .8rem; color: var(--texto2); }

.rank-score {
    font-family: "Orbitron", sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--grad-green);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── ALUNOS DINÂMICOS ── */
#alunos-container .aluno-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}
#alunos-container .aluno-row input { flex: 1; }

/* ── ALERTS ── */
.alert {
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: .9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    border: none;
}

.alert-success {
    background: rgba(107,207,127,.12);
    border-left: 4px solid var(--verde);
    color: #166534;
}
.alert-error {
    background: rgba(255,107,157,.1);
    border-left: 4px solid var(--vermelho);
    color: #9f1239;
}

/* ── GRID ── */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 600px) {
    .grid-2 { grid-template-columns: 1fr; }
}

/* ── NOTA SLIDER ── */
.nota-group { margin-bottom: 18px; }
.nota-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nota-group label .nota-val {
    font-family: "Orbitron", sans-serif;
    font-size: .95rem;
    font-weight: 900;
    background: var(--grad-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 32px;
    text-align: right;
}

input[type="range"] {
    -webkit-appearance: none;
    height: 6px;
    background: linear-gradient(90deg, var(--roxo), var(--rosa));
    border-radius: 3px;
    padding: 0;
    border: none;
    margin-top: 8px;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(157,80,255,.5);
    border: 3px solid var(--roxo);
}

/* ── HOME CARDS ── */
.home-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 8px;
    margin-bottom: 28px;
}

.home-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 28px 20px;
    text-align: center;
    transition: transform .2s, box-shadow .2s, border-color .2s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.home-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--grad-main);
    opacity: 0;
    transition: opacity .2s;
}

.home-card:hover {
    border-color: rgba(157,80,255,.3);
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(157,80,255,.15);
}
.home-card:hover::before { opacity: 1; }

.home-card .icon { font-size: 2.4rem; margin-bottom: 12px; }
.home-card .label {
    font-size: .75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    font-weight: 700;
}
.home-card .count {
    font-family: "Orbitron", sans-serif;
    font-size: 2.2rem;
    font-weight: 900;
    background: var(--grad-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

/* ── QR ── */
.qr-wrap {
    text-align: center;
    padding: 16px;
}
.qr-wrap img {
    border: 3px solid rgba(157,80,255,.4);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(157,80,255,.2);
}

/* ── LOGIN ── */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--grad-hero);
}

.login-box {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 24px 64px rgba(0,0,0,.25);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo .title {
    font-family: "Orbitron", sans-serif;
    font-size: 1.6rem;
    font-weight: 900;
    background: var(--grad-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 6px;
}

.login-logo .sub {
    font-size: .78rem;
    color: var(--muted);
    letter-spacing: .1em;
    text-transform: uppercase;
}

/* ── DIVIDER ── */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 8px 0 24px;
}

/* ── OVERLAY MOBILE ── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 99;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-overlay.open {
        display: block;
    }
    .main-content {
        margin-left: 0;
    }
    .hamburger {
        display: block;
    }
    .container {
        padding: 24px 16px 60px;
    }
    .topbar {
        padding: 14px 20px;
    }
    .home-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 400px) {
    .home-grid {
        grid-template-columns: 1fr;
    }
}