:root {
    --color-primario: #FFD700;
    --color-fondo: #000000;
    --color-texto: #1a1a1a;
    --gris-claro: #f4f4f4;
    --gris-borde: #dddddd;
    --aviso-bg: #fffceb;
    --green: #2a9d5c;
    --amber: #f4a423;
    --blue: #4a6cf7;
    --red: #e63946;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--gris-claro);
    color: var(--color-texto);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── HEADER ── */
header {
    background-color: var(--color-fondo);
    color: var(--color-primario);
    padding: 15px 40px;
    border-bottom: 5px solid var(--color-primario);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-logo img { height: 50px; display: block; }
.header-tag { font-size: 11px; color: #ffffff; letter-spacing: 1px; font-weight: 700; }

/* ── AVISO ── */
.top-notice {
    background-color: var(--aviso-bg);
    border-bottom: 1px solid var(--color-primario);
    border-left: 5px solid var(--color-primario);
    padding: 15px 20px;
    text-align: center;
    font-size: 12px;
    color: #444;
}
.top-notice strong { color: var(--color-fondo); font-weight: 800; }
.top-notice p { max-width: 900px; margin: 0 auto; }

/* ── LAYOUT ── */
.main-container {
    max-width: 800px;
    margin: 30px auto 40px;
    padding: 0 20px;
    flex: 1;
}

/* ── TABS ── */
.nav-tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--gris-borde);
}
.nav-tab {
    font-family: 'Montserrat', sans-serif;
    padding: 12px 25px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    background: none;
    color: #666;
    transition: 0.2s;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}
.nav-tab.active { color: var(--color-fondo); border-bottom-color: var(--color-fondo); }
.nav-tab:hover { color: var(--color-fondo); }

/* ── CARD ── */
.section-card {
    background: #ffffff;
    padding: 30px;
    border: 1px solid var(--gris-borde);
    margin-bottom: 20px;
}
.section-title {
    font-size: 14px;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: 20px;
    color: var(--color-fondo);
    border-left: 4px solid var(--color-primario);
    padding-left: 10px;
}

/* ── FORM ── */
label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    margin-bottom: 5px;
    text-transform: uppercase;
    color: #444;
}
input, select, textarea {
    font-family: 'Montserrat', sans-serif;
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gris-borde);
    font-size: 13px;
    outline: none;
    transition: border .2s;
}
input:focus, select:focus, textarea:focus { border-color: var(--color-fondo); }

/* ── FILE ZONES ── */
.file-drop-zone {
    border: 2px dashed var(--gris-borde);
    padding: 25px;
    text-align: center;
    background: #fafafa;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    transition: .2s;
    position: relative;
}
.file-drop-zone:hover { border-color: var(--color-fondo); background: #f0f0f0; }
.file-drop-zone.file-ok { border-color: var(--green); background: #f0fff7; color: var(--green); }
.file-drop-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }

/* ── BUTTONS ── */
.btn-action {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--color-fondo);
    color: var(--color-primario);
    border: none;
    padding: 15px 30px;
    font-size: 13px;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    width: 100%;
    transition: opacity .2s;
}
.btn-action:hover { opacity: 0.85; }
.btn-action:disabled { opacity: 0.45; cursor: not-allowed; }

/* ── SUCCESS ── */
.success-folio {
    text-align: center;
    background: #000;
    color: #FFD700;
    padding: 24px 20px;
    margin: 20px 0;
    font-size: 28px;
    font-weight: 900;
    letter-spacing: 3px;
}
.success-hint {
    text-align: center;
    font-size: 12px;
    color: #666;
    font-weight: 600;
    margin-bottom: 20px;
}

/* ── RASTREO ── */
.track-card {
    margin-top: 20px;
    border: 2px solid var(--color-fondo);
    overflow: hidden;
}
.track-header {
    background: var(--color-fondo);
    color: var(--color-primario);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.track-folio { font-size: 16px; font-weight: 900; letter-spacing: 1px; }
.track-body { padding: 20px; }
.track-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 13px;
}
.track-row:last-child { border-bottom: none; }
.track-key { font-size: 11px; font-weight: 700; text-transform: uppercase; color: #888; }
.track-val { font-weight: 600; }

/* ── BADGES ── */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge-recibida   { background: #fff3cc; color: #7a5f00; border: 1px solid #d4a017; }
.badge-en_proceso { background: #e8eeff; color: #2d4ac7; border: 1px solid #4a6cf7; }
.badge-enviada    { background: #e6f9f0; color: #166534; border: 1px solid #2a9d5c; }
.badge-rechazada  { background: #ffe8e8; color: #991b1b; border: 1px solid #e63946; }

/* ── PROGRESS STEPS ── */
.progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0 8px;
}
.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1;
    position: relative;
}
.step-dot {
    width: 32px; height: 32px;
    border-radius: 50%;
    border: 3px solid #ddd;
    background: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px;
    font-weight: 800;
    color: #bbb;
    position: relative;
    z-index: 1;
    transition: .3s;
}
.step-dot.done  { background: var(--green);  border-color: var(--green);  color: #fff; }
.step-dot.active{ background: var(--color-fondo); border-color: var(--color-fondo); color: var(--color-primario); }
.step-label { font-size: 9px; font-weight: 800; text-transform: uppercase; color: #aaa; text-align: center; }
.step-label.done   { color: var(--green); }
.step-label.active { color: var(--color-fondo); }
.step-line {
    flex: 1;
    height: 3px;
    background: #ddd;
    margin-top: -22px;
    position: relative;
    z-index: 0;
}
.step-line.done { background: var(--green); }

/* ── NOTAS Y ALERTAS ── */
.nota-admin-box {
    background: #fffceb;
    border: 1px solid #f4a423;
    border-left: 4px solid #f4a423;
    padding: 12px 16px;
    margin-top: 16px;
    font-size: 12px;
    color: #5a4200;
    font-weight: 600;
    border-radius: 0 4px 4px 0;
}
.nota-admin-box strong { display: block; font-size: 10px; text-transform: uppercase; margin-bottom: 4px; color: #7a5f00; }

.factura-box {
    background: #f0fff7;
    border: 2px solid var(--green);
    padding: 16px 20px;
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.factura-box-info { font-size: 12px; }
.factura-box-title { font-weight: 800; color: var(--green); font-size: 11px; text-transform: uppercase; margin-bottom: 3px; }
.factura-box-sub { color: #555; font-weight: 600; }
.btn-descargar {
    font-family: 'Montserrat', sans-serif;
    background: var(--green);
    color: #fff;
    border: none;
    padding: 10px 18px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-descargar:hover { background: #218c4e; }

.rechazada-box {
    background: #ffe8e8;
    border: 2px solid var(--red);
    padding: 16px 20px;
    margin-top: 16px;
    font-size: 12px;
    color: #7a1a1a;
    font-weight: 600;
}
.rechazada-box strong { display: block; font-size: 10px; text-transform: uppercase; margin-bottom: 4px; }

/* ── LOADER ── */
.overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.88);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
}
.overlay-text {
    color: var(--color-primario);
    font-size: 14px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
}
.overlay-spinner {
    width: 40px; height: 40px;
    border: 4px solid rgba(255,215,0,0.2);
    border-top-color: var(--color-primario);
    border-radius: 50%;
    animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-msg {
    background: #ffe8e8;
    border: 1px solid var(--red);
    color: #7a1a1a;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 12px;
    display: none;
}

/* ── FOOTER ── */
footer {
    background-color: var(--color-fondo);
    color: #ffffff;
    padding: 40px 20px;
    font-size: 11px;
    text-align: center;
    border-top: 5px solid var(--color-primario);
}

@media (max-width: 500px) {
    header { padding: 15px 20px; }
    .section-card { padding: 20px 16px; }
    .step-label { font-size: 8px; }
}