@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,300&family=DM+Mono:wght@400;500&display=swap');

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

:root {
    --ink:        #0f1923;
    --ink-mid:    #2d3f50;
    --ink-soft:   #526070;
    --ink-muted:  #8ea0ae;
    --ink-faint:  #c8d4db;
    --paper:      #f0f3f5;
    --surface:    #ffffff;
    --surface-2:  #f5f7f9;
    --accent:     #1a5fa8;
    --accent-mid: #1e72c8;
    --accent-soft:#deeaf8;
    --accent-glow:rgba(26, 95, 168, 0.12);
    --ok:         #0d7a50;
    --ok-soft:    #d4f0e6;
    --warn:       #b45309;
    --warn-soft:  #fef3c7;
    --radius-sm:  4px;
    --radius:     8px;
    --radius-lg:  12px;
    --shadow-xs:  0 1px 2px rgba(15,25,35,.06);
    --shadow-sm:  0 2px 6px rgba(15,25,35,.08);
    --shadow-md:  0 4px 16px rgba(15,25,35,.10);
    --t: 180ms ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 56px;
    -webkit-font-smoothing: antialiased;
}

/* HEADER */
.app-header {
    background: var(--ink);
    padding: 28px 32px 24px;
    position: relative;
    overflow: hidden;
}
.app-header::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,95,168,.22) 0%, transparent 60%);
    pointer-events: none;
}
.header-inner {
    max-width: 760px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
}
.app-title {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.5px;
    line-height: 1;
    margin-bottom: 6px;
}
.app-title .accent { color: #4d9de0; }
.app-subtitle {
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(255,255,255,.5);
    letter-spacing: 0.4px;
    text-transform: uppercase;
}
.header-badge {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.13);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    font-size: 0.62rem;
    font-weight: 600;
    color: rgba(255,255,255,.55);
    letter-spacing: 0.6px;
    text-transform: uppercase;
    white-space: nowrap;
    line-height: 1.4;
    text-align: right;
}

/* CONTAINER */
.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 24px 20px;
}

/* OBSERVAÇÃO */
.observacao {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
    color: var(--ink-soft);
    background: var(--surface);
    border: 1px solid var(--ink-faint);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 10px 14px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-xs);
}
.observacao::before { content: '📄'; font-size: 0.9rem; flex-shrink: 0; }
.observacao a { color: var(--accent); text-decoration: none; font-weight: 600; transition: color var(--t); }
.observacao a:hover { color: var(--accent-mid); text-decoration: underline; }

/* CONTADORES */
.counters-container {
    display: grid;
    grid-template-columns: 1fr 1.7fr;
    gap: 12px;
    margin-bottom: 20px;
}
.counter-card {
    background: var(--surface);
    border: 1px solid var(--ink-faint);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    box-shadow: var(--shadow-xs);
    transition: border-color var(--t);
    position: relative;
    overflow: hidden;
}
.counter-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-mid));
    opacity: 0;
    transition: opacity var(--t);
}
.counter-card:hover::before { opacity: 1; }
.counter-card:hover { border-color: var(--ink-muted); }
.counter-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}
.counter-value {
    font-family: 'DM Mono', monospace;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--ink-mid);
    line-height: 1.2;
    transition: all 0.3s ease;
}
.counter-value.subtle { font-size: 1rem; color: var(--ink-soft); }
.counter-value.updated { animation: countPulse 0.5s ease; }
@keyframes countPulse {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.04); color: var(--accent); }
    100% { transform: scale(1); }
}
.counter-description { font-size: 0.62rem; color: var(--ink-muted); margin-top: 3px; }
.counter-stats { font-size: 0.67rem; color: var(--ink-muted); margin-top: 4px; font-weight: 500; }
#globalCount { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.counter-update { font-size: 0.59rem; color: var(--ink-faint); margin-top: 3px; font-style: italic; }
.counter-card.offline .counter-value { color: var(--warn) !important; opacity: 0.85; }
.counter-stats.updated { animation: statPulse 0.5s ease; }
@keyframes statPulse {
    0%, 100% { color: var(--ink-muted); }
    50% { color: var(--accent); }
}

/* FORM */
form {
    background: var(--surface);
    border: 1px solid var(--ink-faint);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}
.form-section { margin-bottom: 20px; }
.form-field { display: flex; flex-direction: column; gap: 5px; }

select {
    width: 100%;
    padding: 11px 36px 11px 14px;
    border: 1.5px solid var(--ink-faint);
    border-radius: var(--radius);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    color: var(--ink);
    background: var(--surface);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%238ea0ae' d='M5 6L0 0h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    transition: border-color var(--t), box-shadow var(--t);
}
select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
select option:disabled { color: var(--ink-muted); }
select option:not(:disabled) { color: var(--ink); }

label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink-soft);
    letter-spacing: 0.1px;
}

input[type="number"] {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--ink-faint);
    border-radius: var(--radius);
    font-family: 'DM Mono', monospace;
    font-size: 0.9rem;
    color: var(--ink);
    background: var(--surface);
    transition: border-color var(--t), box-shadow var(--t);
}
input[type="number"]:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
input[type="number"]:hover:not(:focus) { border-color: var(--ink-muted); }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { opacity: 0.35; }

/* Sub-grupos */
.form-sub-group {
    background: var(--surface-2);
    border: 1px solid var(--ink-faint);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

h3 {
    font-size: 0.73rem;
    font-weight: 700;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
h3::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    flex-shrink: 0;
}

/* Divider */
.form-divider { height: 1px; background: var(--ink-faint); margin: 6px 0 20px; }

/* BUTTON */
button[type="button"]:not(.copy-btn) {
    width: 100%;
    padding: 13px 20px;
    background: var(--ink);
    color: #fff;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.2px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--t), transform var(--t), box-shadow var(--t);
    margin-top: 4px;
}
button[type="button"]:not(.copy-btn):hover {
    background: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
button[type="button"]:not(.copy-btn):active { transform: translateY(0); box-shadow: var(--shadow-xs); }

/* RESULTADO */
#resultadoContainer {
    margin-top: 20px;
    background: var(--surface);
    border: 1.5px solid var(--accent);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: slideUp 0.35s cubic-bezier(.22,.68,0,1.2);
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.resultado-header {
    background: var(--accent);
    padding: 7px 18px;
}
.resultado-header-text {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.7px;
    text-transform: uppercase;
    color: rgba(255,255,255,.75);
}
.resultado-body {
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
#resultado {
    font-family: 'DM Mono', monospace;
    font-size: 1.55rem;
    font-weight: 500;
    color: var(--ink);
    margin: 0;
    letter-spacing: -0.5px;
}
.copy-btn {
    background: transparent;
    color: var(--ink-soft);
    border: 1.5px solid var(--ink-faint);
    border-radius: var(--radius);
    padding: 7px 13px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--t);
    white-space: nowrap;
    flex-shrink: 0;
}
.copy-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.copy-btn svg { fill: currentColor; }
.copy-feedback {
    font-size: 0.75rem;
    margin: 0 18px 12px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    display: none;
    font-weight: 500;
}
.copy-feedback.success { background: var(--ok-soft); color: var(--ok); border: 1px solid #a7f3d0; }
.copy-feedback.error { background: var(--warn-soft); color: var(--warn); border: 1px solid #fde68a; }

/* DEFAULT HIDDEN */
#areaConstruidaContainer { display: none; }

/* FOOTER */
footer {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--ink);
    color: rgba(255,255,255,.3);
    padding: 0 20px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-top: 1px solid rgba(255,255,255,.05);
}

/* RESPONSIVE */
@media (max-width: 640px) {
    .app-header { padding: 20px 16px; }
    .header-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
    .header-badge { align-self: flex-start; }
    .container { padding: 16px; }
    .counters-container { grid-template-columns: 1fr; }
    form { padding: 18px 16px; }
    #resultado { font-size: 1.25rem; }
    .resultado-body { flex-direction: column; align-items: stretch; }
    .copy-btn { justify-content: center; }
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-faint); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-muted); }