/**
 * Login 2.0 — estilos da nova tela de login (index-2.0.php).
 *
 * @ai-agent: Este CSS e' SELF-CONTAINED — nao depende de Bootstrap nem do
 *            app.css. Toda cor sai de tokens `--login-*` no :root (preparados
 *            para um tema escuro futuro; NAO hardcodar cor fora do :root).
 *            O painel de marca esquerdo ROTACIONA entre 5 fundos via
 *            @keyframes puro (sem JS de animacao). O JS so' embaralha a ordem
 *            das camadas (cor inicial sorteada) e trata reduced-motion.
 *            Invariante: a coluna do formulario (.login-form) e' FIXA — so' o
 *            painel esquerdo muda. Nao mover regras de layout para inline.
 *
 * @junior-dev: Estrutura = .login-shell (grid 46/54) > .login-brand (palco
 *              rotativo) + .login-form (card fixo). Os 2 passos do login sao
 *              controlados pela classe .is-step1 / .is-step2 no .login-shell
 *              (JS alterna). Mobile (<768px) empilha: painel vira faixa no topo.
 *              Tokens de cor no topo; se precisar de nova cor, cria um token.
 * Spec: docs/superpowers/specs/2026-07-08-login-2.0-design.md
 */

/* ============================================================
   TOKENS
   ============================================================ */
:root {
    --login-bg: #f8fafc;
    --login-card: #ffffff;
    --login-border: #e2e8f0;
    --login-text: #0f172a;
    --login-muted: #64748b;
    --login-placeholder: #94a3b8;
    --login-primary: #2563eb;
    --login-primary-2: #6366f1;
    --login-grad-primary: linear-gradient(135deg, #2563eb 0%, #6366f1 100%);
    --login-success: #16a34a;
    --login-success-bg: #f0fdf4;
    --login-success-border: #bbf7d0;
    --login-danger: #ef4444;
    --login-danger-bg: rgba(239, 68, 68, 0.08);
    --login-radius: 8px;
    --login-radius-lg: 14px;
    --login-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --login-shadow-lg: 0 24px 50px -14px rgba(15, 23, 42, 0.28);
    --login-ring: 0 0 0 3px rgba(37, 99, 235, 0.12);
    --login-ring-danger: 0 0 0 3px rgba(239, 68, 68, 0.12);
    --login-transition: cubic-bezier(0.4, 0, 0.2, 1);
    --login-font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Fundos rotativos do painel de marca (1 vibrante -> 5 sofisticado). */
    --login-bg1: linear-gradient(130deg, #7c3aed 0%, #db2777 38%, #f97316 70%, #06b6d4 100%);
    --login-bg2: linear-gradient(135deg, #db2777 0%, #f97316 55%, #facc15 100%);
    --login-bg3: linear-gradient(140deg, #06b6d4 0%, #2563eb 55%, #7c3aed 100%);
    --login-bg4:
        radial-gradient(300px circle at 22% 28%, rgba(236, 72, 153, 0.9), transparent 60%),
        radial-gradient(320px circle at 82% 22%, rgba(6, 182, 212, 0.85), transparent 60%),
        radial-gradient(300px circle at 60% 92%, rgba(234, 179, 8, 0.8), transparent 55%),
        radial-gradient(280px circle at 12% 88%, rgba(124, 58, 237, 0.85), transparent 55%),
        #0f172a;
    --login-bg5: radial-gradient(600px circle at 80% 15%, #1e293b, #0b1220);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    font-family: var(--login-font);
    color: var(--login-text);
    background: var(--login-bg);
    -webkit-font-smoothing: antialiased;
}

/* Link "pular para o formulario" (acessibilidade) — some fora do foco. */
.login-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    background: var(--login-primary);
    color: #fff;
    padding: 8px 14px;
    border-radius: 0 0 var(--login-radius) 0;
    font-size: 13px;
    text-decoration: none;
}
.login-skip:focus {
    left: 0;
}

/* ============================================================
   SHELL — split-screen
   ============================================================ */
.login-shell {
    display: grid;
    grid-template-columns: 46% 54%;
    min-height: 100dvh;
    min-height: 100vh; /* fallback browsers sem dvh */
}

/* ============================================================
   PAINEL DE MARCA (esquerda) — palco rotativo
   ============================================================ */
.login-brand {
    position: relative;
    overflow: hidden;
    background: #0f172a; /* base atras das camadas (evita flash branco) */
}

/* Cada camada = um fundo + conteudo de marca. Empilhadas em crossfade.
   A ORDEM no DOM define qual delay (nth-child) cada uma recebe — o JS
   embaralha a ordem para sortear a cor inicial a cada visita. */
.login-brand-layer {
    position: absolute;
    inset: 0;
    padding: clamp(24px, 4vw, 44px);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    opacity: 0;
    animation: loginCycle 50s infinite;
    animation-delay: 0s;
}
/* 5 camadas × 10s de janela = ciclo de 50s. */
.login-brand-layer:nth-child(1) { animation-delay: 0s; }
.login-brand-layer:nth-child(2) { animation-delay: 10s; }
.login-brand-layer:nth-child(3) { animation-delay: 20s; }
.login-brand-layer:nth-child(4) { animation-delay: 30s; }
.login-brand-layer:nth-child(5) { animation-delay: 40s; }

@keyframes loginCycle {
    0%   { opacity: 0; }
    1.2% { opacity: 1; }
    18%  { opacity: 1; }
    20%  { opacity: 0; }
    100% { opacity: 0; }
}

/* fundos por modificador */
.login-bg--1 { background: var(--login-bg1); }
.login-bg--2 { background: var(--login-bg2); }
.login-bg--3 { background: var(--login-bg3); }
.login-bg--4 { background: var(--login-bg4); }
.login-bg--5 { background: var(--login-bg5); }

/* textura de grao sobre o gradiente (mata banding, da sensacao tatil) */
.login-grain {
    position: absolute;
    inset: 0;
    opacity: 0.06;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.login-brand-logo {
    position: relative;
    z-index: 2;
    font-weight: 800;
    font-size: 22px;
    letter-spacing: -0.5px;
}
.login-brand-mid {
    position: relative;
    z-index: 2;
}
.login-brand-head {
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.6px;
    text-wrap: balance;
}
.login-brand-sub {
    font-size: 13px;
    opacity: 0.85;
    margin-top: 8px;
    max-width: 34ch;
}
.login-brand-chips {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
}
.login-brand-chip {
    font-size: 11px;
    padding: 4px 11px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.26);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}
/* faixa de amostras (so' na camada 5 — Swatches) */
.login-brand-swatches {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 8px;
    margin-top: 16px;
}
.login-brand-swatches i {
    flex: 1;
    height: 32px;
    border-radius: 6px;
}

/* dots de progresso (decorativos) */
.login-brand-dots {
    position: absolute;
    bottom: 18px;
    right: 22px;
    z-index: 3;
    display: flex;
    gap: 6px;
}
.login-brand-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
}

/* ============================================================
   COLUNA DO FORMULARIO (direita) — FIXA
   ============================================================ */
.login-form {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    background: var(--login-bg);
}
.login-card {
    width: 100%;
    max-width: 320px;
    background: var(--login-card);
    border: 1px solid var(--login-border);
    border-radius: var(--login-radius-lg);
    box-shadow: var(--login-shadow);
    padding: 28px;
}
.login-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--login-text);
}
.login-card-sub {
    font-size: 12px;
    color: var(--login-muted);
    margin: 3px 0 18px;
}

/* passos: controlados por .is-step1/.is-step2 no shell */
.login-step2 { display: none; }
.login-shell.is-step2 .login-step1 { display: none; }
.login-shell.is-step2 .login-step2 { display: block; }

.login-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--login-text);
    margin-bottom: 5px;
}
.login-field { margin-bottom: 14px; }

/* input + affordance embutida (seta ou olho) */
.login-input-wrap {
    display: flex;
    align-items: center;
    background: var(--login-card);
    border: 1px solid var(--login-border);
    border-radius: var(--login-radius);
    height: 44px;
    padding: 0 6px 0 12px;
    transition: border-color 0.15s var(--login-transition), box-shadow 0.15s var(--login-transition);
}
.login-input-wrap:focus-within {
    border-color: var(--login-primary);
    box-shadow: var(--login-ring);
}
.login-input-wrap.is-error {
    border-color: var(--login-danger);
    box-shadow: var(--login-ring-danger);
}
.login-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--login-font); /* mesma fonte dos campos do CRM */
    font-size: 14px;
    font-weight: 500;
    color: var(--login-text);
    height: 100%;
}
.login-input::placeholder { color: var(--login-placeholder); font-weight: 400; }

/* botao-seta do passo 1 (dentro do input) */
.login-arrow {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 6px;
    background: var(--login-grad-primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.12s var(--login-transition);
}
.login-arrow:hover { transform: translateY(-1px); }
.login-arrow:active { transform: scale(0.94); }
.login-arrow svg { width: 15px; height: 15px; }

/* olho de senha */
.login-eye {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    color: var(--login-placeholder);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}
.login-eye:hover { color: var(--login-muted); }
.login-eye svg { width: 17px; height: 17px; }
.login-eye .login-eye-off { display: none; }
.login-eye[aria-pressed="true"] .login-eye-on { display: none; }
.login-eye[aria-pressed="true"] .login-eye-off { display: block; }

/* chip de contexto da empresa (passo 2) */
.login-ctx {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--login-success-bg);
    border: 1px solid var(--login-success-border);
    border-radius: var(--login-radius);
    padding: 8px 10px;
    margin-bottom: 16px;
}
.login-ctx-check {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--login-success);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}
.login-ctx-name {
    flex: 1;
    font-size: 12px;
    font-weight: 600;
    color: var(--login-text);
    line-height: 1.15;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.login-ctx-trocar {
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 2px 4px;
    font-family: var(--login-font);
    font-size: 11px;
    font-weight: 600;
    color: var(--login-primary);
    cursor: pointer;
}
.login-ctx-trocar:hover { text-decoration: underline; }

/* botao Entrar / Continuar */
.login-btn {
    width: 100%;
    height: 44px;
    margin-top: 8px;
    border: none;
    border-radius: var(--login-radius);
    background: var(--login-grad-primary);
    color: #fff;
    font-family: var(--login-font);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.32);
    transition: transform 0.12s var(--login-transition), box-shadow 0.12s var(--login-transition);
}
.login-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4); }
.login-btn:active { transform: scale(0.98); }
.login-btn:disabled { opacity: 0.7; cursor: default; transform: none; box-shadow: none; }

/* spinner inline no botao (loading) */
.login-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #fff;
    border-radius: 50%;
    animation: loginSpin 0.7s linear infinite;
    display: none;
}
.is-loading .login-spinner { display: block; }
/* no passo 1 o loading vive dentro do botao-seta (icone some, spinner entra) */
.login-arrow.is-loading svg { display: none; }
@keyframes loginSpin { to { transform: rotate(360deg); } }

/* mensagens de erro */
.login-error-field {
    display: none;
    font-size: 12px;
    color: var(--login-danger);
    margin-top: 6px;
}
.login-error-field.is-visible { display: flex; align-items: center; gap: 5px; }

.login-error-banner {
    display: none;
    align-items: center;
    gap: 7px;
    background: var(--login-danger-bg);
    border-left: 3px solid var(--login-danger);
    border-radius: 6px;
    padding: 8px 11px;
    font-size: 12px;
    color: var(--login-text);
    margin-bottom: 14px;
}
.login-error-banner.is-visible { display: flex; }
.login-error-banner b { color: var(--login-danger); }

/* ============================================================
   MOBILE (<768px) — empilha; painel vira faixa superior
   ============================================================ */
@media (max-width: 767.98px) {
    .login-shell {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    .login-brand {
        min-height: 150px;
        max-height: 26vh;
    }
    .login-brand-layer {
        padding: 18px 20px;
    }
    /* na faixa compacta, subtitulo/swatches somem (custam altura no mobile) */
    .login-brand-sub,
    .login-brand-swatches,
    .login-brand-dots {
        display: none;
    }
    .login-brand-head {
        font-size: 17px;
    }
    .login-brand-chips {
        display: none;
    }
    .login-form {
        padding: 22px 20px 32px;
        align-items: flex-start;
    }
    .login-card {
        max-width: 100%;
        border: none;
        box-shadow: none;
        background: transparent;
        padding: 8px 0 0;
    }
}

/* ============================================================
   REDUCED MOTION — desliga rotacao; mostra so' a 1a camada
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .login-brand-layer {
        animation: none;
        opacity: 0;
    }
    .login-brand-layer:first-child {
        opacity: 1;
    }
    .login-spinner { animation-duration: 1.2s; }
    .login-btn, .login-arrow { transition: none; }
}