/* ================================================================
   criscuolo.online — Conversor de Bytes
   ================================================================ */

:root {
    --brand-gold: #D4A843;
    --brand-gold-light: #E0BE6A;
    --brand-gold-dark: #B8922F;
    --brand-gradient: linear-gradient(135deg, #D4A843, #E0BE6A, #D4A843);
    --cta-gradient: linear-gradient(135deg, #D4A843, #B8922F);

    --bg-primary: #16161E;
    --bg-secondary: #1C1C26;
    --bg-card: rgba(24, 24, 32, 0.88);
    --bg-card-border: rgba(212, 168, 67, 0.12);
    --bg-card-border-hover: rgba(212, 168, 67, 0.3);
    --bg-input: #141420;
    --bg-hover: rgba(212, 168, 67, 0.08);

    --text-primary: #F2F0EB;
    --text-secondary: #9B978E;
    --text-muted: #6B6760;
    --text-accent: #D4A843;

    --color-success: #22C55E;
    --color-error: #EF4444;

    --color-blue: #3B82F6;
    --color-blue-bg: rgba(59, 130, 246, 0.1);
    --color-blue-border: rgba(59, 130, 246, 0.25);
    --color-purple: #A855F7;
    --color-purple-bg: rgba(168, 85, 247, 0.1);
    --color-purple-border: rgba(168, 85, 247, 0.25);
    --color-gold-bg: rgba(212, 168, 67, 0.1);
    --color-gold-border: rgba(212, 168, 67, 0.25);

    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-xs: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-glow: 0 0 40px rgba(212, 168, 67, 0.1);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-button: 0 4px 15px rgba(212, 168, 67, 0.25);
    --shadow-button-hover: 0 6px 25px rgba(212, 168, 67, 0.35);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

/* ================================================================
   Reset
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg-primary); color: var(--text-primary); min-height: 100vh; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font-family: var(--font); cursor: pointer; }

/* ================================================================
   Fundo decorativo
   ================================================================ */
.bg-effects { position: fixed; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }

.orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.35; }
.orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, rgba(212,168,67,0.18) 0%, transparent 70%); top: -200px; right: -100px; }
.orb-2 { width: 500px; height: 500px; background: radial-gradient(circle, rgba(184,146,47,0.12) 0%, transparent 70%); bottom: -150px; left: -100px; }
.orb-3 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%); top: 40%; left: 10%; }
.orb-4 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(168,85,247,0.06) 0%, transparent 70%); bottom: 10%; right: 15%; }

.grid-overlay {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(212,168,67,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(212,168,67,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ================================================================
   Mouse Glow
   ================================================================ */
.mouse-glow {
    position: fixed; width: 700px; height: 700px; border-radius: 50%;
    background: radial-gradient(circle, rgba(212,168,67,0.06) 0%, rgba(212,168,67,0.02) 40%, transparent 70%);
    transform: translate(-50%, -50%); pointer-events: none; z-index: 1;
    opacity: 0; transition: opacity 0.5s ease;
}
.mouse-glow.visible { opacity: 1; }

/* ================================================================
   Header
   ================================================================ */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 0 24px;
    background: rgba(22,22,30,.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(212,168,67,.08);
    transition: var(--transition);
}
.header.scrolled { background: rgba(22,22,30,.95); border-bottom-color: rgba(212,168,67,.15); }
.header-inner { max-width: 1100px; margin: 0 auto; height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.logo-img-wrapper {
    width: 44px; height: 44px;
    background: radial-gradient(circle,rgba(255,255,255,.95) 60%,rgba(255,255,255,.6) 80%,transparent 100%);
    border-radius: 50%; padding: 5px;
    box-shadow: 0 0 16px rgba(212,168,67,.15);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    transition: var(--transition);
}
.logo-img-wrapper:hover { box-shadow: 0 0 24px rgba(212,168,67,.25); }
.logo-img { width: 100%; height: 100%; object-fit: contain; border-radius: 50%; }
.logo-text-group { display: flex; align-items: baseline; }
.logo-text { font-size: 1.25rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; }
.logo-text-accent { font-size: 1.25rem; font-weight: 800; color: var(--brand-gold); letter-spacing: -0.02em; }

.nav { display: flex; align-items: center; gap: 8px; }
.nav-link { font-size: .9rem; font-weight: 600; color: var(--text-secondary); padding: 8px 14px; border-radius: var(--border-radius-xs); transition: var(--transition); }
.nav-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-link-active { color: var(--brand-gold) !important; background: rgba(212,168,67,.08); }
.nav-cta { font-size: .9rem; font-weight: 700; color: #0C0C0E; background: var(--cta-gradient); padding: 9px 18px; border-radius: var(--border-radius-sm); box-shadow: var(--shadow-button); transition: var(--transition); margin-left: 8px; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-button-hover); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* ================================================================
   Utilities
   ================================================================ */
.gradient-text { background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-label { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--brand-gold); margin-bottom: 8px; }
.breadcrumb { display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; font-weight: 500; color: var(--text-muted); margin-bottom: 12px; transition: var(--transition); }
.breadcrumb:hover { color: var(--text-secondary); }

[data-animate] { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-animate].visible { opacity: 1; transform: translateY(0); }

/* ================================================================
   Page layout
   ================================================================ */
.page-main { padding-top: 72px; min-height: 100vh; position: relative; z-index: 1; }

.page-hero { padding: 56px 24px 48px; }
.page-hero-inner { max-width: 900px; margin: 0 auto; }
.page-title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 16px; }
.page-subtitle { font-size: 1rem; color: var(--text-secondary); max-width: 600px; line-height: 1.7; }

.page-content { padding: 0 24px 80px; }

/* ================================================================
   Converter layout
   ================================================================ */
.converter-wrapper { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 32px; }

/* Input card */
.input-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
    padding: 28px 32px;
}

.input-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
}

.input-row {
    display: flex;
    align-items: stretch;
    gap: 10px;
    flex-wrap: wrap;
}

.value-input {
    flex: 1;
    min-width: 140px;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    padding: 14px 20px;
    outline: none;
    transition: var(--transition);
    -moz-appearance: textfield;
}
.value-input::-webkit-outer-spin-button,
.value-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.value-input:focus { border-color: var(--brand-gold-dark); box-shadow: 0 0 0 3px rgba(212,168,67,0.1); }

.unit-select {
    flex: 0 0 auto;
    background: var(--bg-input);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 14px 16px;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    min-width: 220px;
}
.unit-select option, .unit-select optgroup { background: var(--bg-secondary); color: var(--text-primary); }
.unit-select:focus { border-color: var(--brand-gold-dark); }

.btn-reset {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}
.btn-reset:hover { color: var(--text-primary); border-color: var(--bg-card-border-hover); }

/* ================================================================
   Groups
   ================================================================ */
.group-section { display: flex; flex-direction: column; gap: 14px; }

.group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.group-badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
}

.group-badge-blue   { color: var(--color-blue);   background: var(--color-blue-bg);   border: 1px solid var(--color-blue-border); }
.group-badge-gold   { color: var(--brand-gold);    background: var(--color-gold-bg);   border: 1px solid var(--color-gold-border); }
.group-badge-purple { color: var(--color-purple);  background: var(--color-purple-bg); border: 1px solid var(--color-purple-border); }

.group-note {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ================================================================
   Byte cards grid
   ================================================================ */
.bytes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
}

.byte-card {
    position: relative;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--border-radius-sm);
    padding: 16px 16px 14px;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-height: 90px;
}

.byte-card:hover {
    border-color: var(--bg-card-border-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

/* Highlighted card (current unit) */
.byte-card.active-unit {
    border-color: var(--brand-gold) !important;
    box-shadow: 0 0 0 2px rgba(212,168,67,0.15), var(--shadow-glow) !important;
}

.byte-card.active-unit.color-blue {
    border-color: var(--color-blue) !important;
    box-shadow: 0 0 0 2px rgba(59,130,246,0.15) !important;
}
.byte-card.active-unit.color-purple {
    border-color: var(--color-purple) !important;
    box-shadow: 0 0 0 2px rgba(168,85,247,0.15) !important;
}

.byte-abbr {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    font-family: var(--font-mono);
}

.color-blue   .byte-abbr { color: var(--color-blue); }
.color-gold   .byte-abbr { color: var(--brand-gold); }
.color-purple .byte-abbr { color: var(--color-purple); }

.byte-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.3;
}

.byte-name {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: auto;
}

/* Copy tooltip on hover */
.byte-card::after {
    content: 'Copiar';
    position: absolute;
    top: 8px; right: 10px;
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.byte-card:hover::after { opacity: 1; }

/* ================================================================
   Tabela de referência
   ================================================================ */
.ref-section {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ref-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.ref-title svg { color: var(--brand-gold); flex-shrink: 0; }

.ref-table-wrap {
    overflow-x: auto;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--bg-card-border);
}

.ref-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    background: var(--bg-card);
}

.ref-table thead tr {
    background: rgba(212,168,67,0.06);
    border-bottom: 1px solid var(--bg-card-border);
}

.ref-table th {
    padding: 12px 16px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: left;
    white-space: nowrap;
}

.ref-table td {
    padding: 10px 16px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(212,168,67,0.06);
    vertical-align: middle;
}

.ref-table tr:last-child td { border-bottom: none; }

.ref-table .mono { font-family: var(--font-mono); font-weight: 600; }

/* Row color-coding */
.row-bit td:first-child { color: var(--color-blue); font-weight: 600; }
.row-dec td:first-child { color: var(--brand-gold); font-weight: 600; }
.row-bin td:first-child { color: var(--color-purple); font-weight: 600; }

.row-sep td {
    padding: 8px 16px;
    background: rgba(255,255,255,0.02);
    border-top: 1px solid var(--bg-card-border);
}
.row-sep span {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Nota */
.ref-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
    background: rgba(212,168,67,0.04);
    border: 1px solid var(--bg-card-border);
    border-left: 3px solid var(--brand-gold-dark);
    border-radius: var(--border-radius-xs);
    padding: 14px 18px;
}
.ref-note strong { color: var(--brand-gold); }

/* ================================================================
   Toast
   ================================================================ */
.toast {
    position: fixed; bottom: 28px; left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(30,30,40,0.97);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--bg-card-border); border-radius: 40px;
    padding: 10px 20px; display: flex; align-items: center; gap: 8px;
    font-size: 0.85rem; font-weight: 600; color: var(--text-primary);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5); opacity: 0; pointer-events: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); z-index: 999; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast svg { color: var(--color-success); flex-shrink: 0; }

/* ================================================================
   Footer
   ================================================================ */
.footer { position: relative; z-index: 2; padding: 40px 24px; border-top: 1px solid var(--bg-card-border); }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-logo { font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; color: var(--text-primary); }
.footer-accent { color: var(--brand-gold); }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { font-size: 0.85rem; color: var(--text-muted); transition: var(--transition); }
.footer-nav a:hover { color: var(--text-secondary); }
.footer-copy { font-size: 0.78rem; color: var(--text-muted); }

/* ================================================================
   Responsivo
   ================================================================ */
@media (max-width: 640px) {
    .nav { display: none; position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: rgba(22,22,30,.98); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 16px; border-bottom: 1px solid var(--bg-card-border); gap: 4px; }
    .nav.open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-cta { margin-left: 0; text-align: center; }

    .page-hero { padding: 40px 16px 32px; }
    .page-content { padding: 0 16px 60px; }
    .input-card { padding: 20px; }

    .value-input { font-size: 1.2rem; padding: 12px 16px; min-width: 100px; }
    .unit-select { min-width: 180px; font-size: 0.85rem; }

    .bytes-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }

    .footer-inner { flex-direction: column; text-align: center; }
    .footer-nav { justify-content: center; }
}

@media (max-width: 420px) {
    .input-row { flex-wrap: wrap; }
    .value-input { width: 100%; flex: none; }
    .unit-select { flex: 1; min-width: 0; }
    .bytes-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
}