/* ============================================================
   INNOVA TU CONTABILIDAD - auth.css
   Usado por: login.php, cambiar_clave.php, home.php
   Paleta: Azul #1a3c6e | Naranja #f47920 | Blanco
   Fuentes: Playfair Display + DM Sans
   ============================================================ */

:root {
    --azul:          #1a3c6e;
    --azul-med:      #2255a0;
    --azul-light:    #e8f0fb;
    --naranja:       #f47920;
    --naranja-dark:  #d4651a;
    --naranja-light: #fff3e8;
    --blanco:        #ffffff;
    --gris-claro:    #f7f9fc;
    --gris:          #8a99ae;
    --texto:         #1e2d40;
    --texto-suave:   #5a6b7e;
    --verde:         #28a745;
    --rojo:          #e53935;
    --sombra:        0 4px 24px rgba(26,60,110,.10);
    --sombra-lg:     0 12px 48px rgba(26,60,110,.18);
    --radio:         16px;
    --radio-sm:      8px;
    --trans:         all 0.32s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'DM Sans', sans-serif;
    color: var(--texto);
    background: var(--gris-claro);
    line-height: 1.6;
    min-height: 100vh;
}
a { text-decoration: none; color: inherit; }

/* ============================================================
   LAYOUT AUTH (login y cambio de clave)
   ============================================================ */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--azul) 0%, #2255a0 55%, #1e4e8a 100%);
    padding: 32px 16px;
    position: relative;
    overflow: hidden;
}

/* Esferas decorativas de fondo */
.auth-body::before,
.auth-body::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .18;
    pointer-events: none
}
.auth-body::before {
    width: 500px; height: 500px;
    background: var(--naranja);
    top: -120px; right: -120px;
}
.auth-body::after {
    width: 400px; height: 400px;
    background: #60a5fa;
    bottom: -100px; left: -100px;
}

.auth-card {
    background: var(--blanco);
    border-radius: 24px;
    box-shadow: var(--sombra-lg);
    width: 100%;
    max-width: 460px;
    padding: 48px 44px;
    position: relative;
    z-index: 1;
    animation: cardIn .55s cubic-bezier(.4,0,.2,1) both;
}
@keyframes cardIn {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}
.auth-logo-innova {
    font-family: 'Playfair Display', serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--naranja);
    display: block;
    line-height: 1.1;
}
.auth-logo-sub {
    font-size: .78rem;
    font-weight: 600;
    color: var(--azul);
    letter-spacing: .07em;
    text-transform: uppercase;
}
.auth-divider {
    width: 48px; height: 3px;
    background: linear-gradient(90deg, var(--naranja), var(--azul));
    border-radius: 2px;
    margin: 10px auto 0;
}

.auth-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--azul);
    margin-bottom: 6px;
    text-align: center;
}
.auth-subtitle {
    font-size: .9rem;
    color: var(--texto-suave);
    text-align: center;
    margin-bottom: 32px;
}

/* ============================================================
   FORMULARIO AUTH
   ============================================================ */
.auth-form .form-group { margin-bottom: 20px; }
.auth-form label {
    display: block;
    font-size: .82rem;
    font-weight: 600;
    color: var(--azul);
    margin-bottom: 7px;
    letter-spacing: .03em;
}
.input-wrap {
    position: relative;
}
.input-wrap input {
    width: 100%;
    padding: 13px 44px 13px 16px;
    border: 2px solid #dce6f0;
    border-radius: var(--radio-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: .97rem;
    color: var(--texto);
    background: var(--blanco);
    transition: var(--trans);
    outline: none;
}
.input-wrap input:focus {
    border-color: var(--azul-med);
    box-shadow: 0 0 0 3px rgba(34,85,160,.12);
}
.input-wrap input.error { border-color: var(--rojo); }
.input-wrap .toggle-pass {
    position: absolute;
    right: 13px; top: 50%;
    transform: translateY(-50%);
    background: none; border: none;
    cursor: pointer; padding: 4px;
    color: var(--gris);
    transition: var(--trans);
    font-size: 1rem;
    line-height: 1;
}
.input-wrap .toggle-pass:hover { color: var(--azul); }

/* ============================================================
   REQUISITOS DE CLAVE
   ============================================================ */
.req-list {
    list-style: none;
    background: var(--gris-claro);
    border-radius: var(--radio-sm);
    padding: 14px 16px;
    margin-top: 10px;
    font-size: .82rem;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.req-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gris);
    transition: var(--trans);
}
.req-list li::before {
    content: 'â—‹';
    font-size: .75rem;
    flex-shrink: 0;
    color: var(--gris);
    transition: var(--trans);
}
.req-list li.ok { color: var(--verde); }
.req-list li.ok::before { content: '✓'; color: var(--verde); }
.req-list li.fail { color: var(--rojo); }
.req-list li.fail::before { content: '✗'; color: var(--rojo); }

/* Barra de fortaleza */
.strength-wrap {
    margin-top: 10px;
}
.strength-label {
    font-size: .78rem;
    color: var(--texto-suave);
    margin-bottom: 5px;
}
.strength-bar {
    height: 5px;
    background: #dce6f0;
    border-radius: 3px;
    overflow: hidden;
}
.strength-fill {
    height: 100%;
    border-radius: 3px;
    width: 0;
    transition: width .4s ease, background .4s ease;
}
.strength-fill.s0 { width: 0%; background: #dce6f0; }
.strength-fill.s1 { width: 25%; background: var(--rojo); }
.strength-fill.s2 { width: 50%; background: #f4a520; }
.strength-fill.s3 { width: 75%; background: #60b347; }
.strength-fill.s4 { width: 100%; background: var(--verde); }

/* ============================================================
   BOTÓN SUBMIT
   ============================================================ */
.btn-auth {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--naranja);
    color: var(--blanco);
    font-family: 'DM Sans', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    padding: 15px 32px;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    transition: var(--trans);
    margin-top: 8px;
    letter-spacing: .02em;
}
.btn-auth:hover {
    background: var(--naranja-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(244,121,32,.38);
}
.btn-auth:active { transform: translateY(0); }

/* ============================================================
   ALERTAS
   ============================================================ */
.auth-alert {
    padding: 13px 16px;
    border-radius: var(--radio-sm);
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: 22px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.auth-alert-error {
    background: #fdecea;
    color: #8b1a1a;
    border-left: 4px solid var(--rojo);
}
.auth-alert-ok {
    background: #e6f9ec;
    color: #1e6b3a;
    border-left: 4px solid var(--verde);
}
.auth-alert-info {
    background: var(--azul-light);
    color: var(--azul);
    border-left: 4px solid var(--azul-med);
}
.auth-alert-icon { font-size: 1.1rem; flex-shrink: 0; }

.auth-back {
    text-align: center;
    margin-top: 22px;
    font-size: .87rem;
    color: var(--texto-suave);
}
.auth-back a {
    color: var(--azul-med);
    font-weight: 600;
    transition: var(--trans);
}
.auth-back a:hover { color: var(--naranja); }

/* ============================================================
   HOME NAVBAR
   ============================================================ */
.home-nav {
    background: var(--azul);
    padding: 0;
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    box-shadow: 0 2px 16px rgba(26,60,110,.22);
}
.home-nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.home-nav-brand {
    display: flex;
    align-items: center;
    gap: 11px;
}
.home-nav-brand .logo-innova {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--naranja);
}
.home-nav-brand .logo-sub {
    font-size: .7rem;
    font-weight: 600;
    color: rgba(255,255,255,.7);
    letter-spacing: .06em;
    text-transform: uppercase;
    display: block;
}
.home-nav-user {
    display: flex;
    align-items: center;
    gap: 20px;
}
.home-nav-badge {
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: .82rem;
    color: rgba(255,255,255,.9);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 7px;
}
.home-nav-badge span { font-weight: 700; color: var(--blanco); }
.home-nav-tipo {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    padding: 3px 10px;
    border-radius: 100px;
}
.tipo-admin { background: var(--naranja); color: var(--blanco); }
.tipo-user  { background: rgba(255,255,255,.15); color: rgba(255,255,255,.9); }
.btn-logout {
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.25);
    color: rgba(255,255,255,.9);
    font-family: 'DM Sans', sans-serif;
    font-size: .85rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--trans);
    display: flex;
    align-items: center;
    gap: 7px;
}
.btn-logout:hover {
    background: rgba(244,121,32,.35);
    border-color: var(--naranja);
    color: var(--blanco);
}

/* ============================================================
   HOME CONTENT
   ============================================================ */
.home-main {
    padding-top: 64px;
    min-height: 100vh;
    background: var(--gris-claro);
}
.home-hero {
    background: linear-gradient(110deg, var(--azul) 0%, #2255a0 100%);
    padding: 52px 32px 48px;
}
.home-hero-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.home-welcome {
    color: var(--blanco);
}
.home-welcome .tag {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--naranja);
    background: rgba(244,121,32,.18);
    border: 1px solid rgba(244,121,32,.35);
    border-radius: 100px;
    padding: 4px 14px;
    display: inline-block;
    margin-bottom: 12px;
}
.home-welcome h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
}
.home-welcome h1 span { color: var(--naranja); }
.home-welcome p {
    font-size: .95rem;
    color: rgba(255,255,255,.75);
}

.home-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.stat-card {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radio);
    padding: 20px 28px;
    text-align: center;
    backdrop-filter: blur(6px);
    min-width: 110px;
}
.stat-card .num {
    font-family: 'Playfair Display', serif;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--naranja);
    line-height: 1;
}
.stat-card .lbl {
    font-size: .75rem;
    color: rgba(255,255,255,.7);
    margin-top: 4px;
    font-weight: 500;
}

/* Home body padding */
.home-body {
    max-width: 1280px;
    margin: 0 auto;
    padding: 48px 32px;
}

.home-section-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--azul);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.home-section-title::after {
    content: '';
    flex: 1;
    height: 2px;
    background: transparent);
    border-radius: 1px
}

.home-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}
.home-card {
    background: var(--blanco);
    border-radius: var(--radio);
    padding: 28px 24px;
    box-shadow: var(--sombra);
    transition: var(--trans);
    border-top: 3px solid transparent;
    cursor: default;
}
.home-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sombra-lg);
    border-top-color: var(--naranja);
}
.home-card-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}
.home-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--azul);
    margin-bottom: 6px;
}
.home-card p {
    font-size: .85rem;
    color: var(--texto-suave);
    line-height: 1.6;
}
.home-card-action {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 16px;
    font-size: .82rem;
    font-weight: 600;
    color: var(--naranja);
    transition: var(--trans);
}
.home-card:hover .home-card-action { gap: 8px; }

/* Aviso de construcción */
.under-construction {
    background: var(--blanco);
    border: 2px dashed #dce6f0;
    border-radius: var(--radio);
    padding: 56px 40px;
    text-align: center;
    color: var(--gris);
}
.under-construction .uc-icon { font-size: 3rem; margin-bottom: 16px; }
.under-construction h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--azul);
    margin-bottom: 8px;
}
.under-construction p { font-size: .92rem; line-height: 1.7; max-width: 440px; margin: 0 auto; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .auth-card { padding: 36px 24px; }
    .home-nav-inner { padding: 0 16px; }
    .home-hero { padding: 36px 16px 32px; }
    .home-hero-inner { flex-direction: column; align-items: flex-start; }
    .home-stats { width: 100%; }
    .home-body { padding: 32px 16px; }
}
@media (max-width: 480px) {
    .auth-card { padding: 28px 18px; }
    .home-nav-badge { display: none; }
    .stat-card { flex: 1; }
}