/* Tema escuro (padrão) — Black Premium */
        :root,
        [data-bs-theme="dark"] {
            --content-bg: #0b0c10;
            --content-bg-2: #0f1622;
            --card-bg: rgba(20, 23, 26, 0.85);
            --text-main: #f8f9fa;
            --text-muted: #94a3b8;
            --border-color: #272c33;
            --primary-accent: #3b82f6;
            --input-bg: #1e242b;
            --glow-1: rgba(59, 130, 246, 0.18);
            --glow-2: rgba(14, 165, 233, 0.14);
            --card-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
        }

        /* Tema claro — corporativo clean */
        [data-bs-theme="light"] {
            --content-bg: #eef2f7;
            --content-bg-2: #dbe6f5;
            --card-bg: rgba(255, 255, 255, 0.9);
            --text-main: #0f172a;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --primary-accent: #2563eb;
            --input-bg: #f8fafc;
            --glow-1: rgba(37, 99, 235, 0.16);
            --glow-2: rgba(14, 165, 233, 0.12);
            --card-shadow: 0 24px 60px rgba(37, 99, 235, 0.12);
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--content-bg);
            background-image:
                radial-gradient(circle at 12% 18%, var(--glow-1) 0%, transparent 45%),
                radial-gradient(circle at 88% 82%, var(--glow-2) 0%, transparent 45%),
                linear-gradient(135deg, var(--content-bg) 0%, var(--content-bg-2) 100%);
            color: var(--text-main);
            min-height: 100vh;
            margin: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow-x: hidden;
            overflow-y: auto;
            padding: 1.5rem;
        }

        /* Brilhos flutuantes da marca (sutil e animado) */
        body::before,
        body::after {
            content: "";
            position: fixed;
            border-radius: 50%;
            filter: blur(90px);
            opacity: 0.55;
            z-index: 0;
            pointer-events: none;
        }

        body::before {
            width: 460px;
            height: 460px;
            top: -140px;
            left: -120px;
            background: var(--glow-1);
            animation: floatGlow 14s ease-in-out infinite alternate;
        }

        body::after {
            width: 520px;
            height: 520px;
            bottom: -180px;
            right: -140px;
            background: var(--glow-2);
            animation: floatGlow 18s ease-in-out infinite alternate-reverse;
        }

        @keyframes floatGlow {
            from {
                transform: translate(0, 0) scale(1);
            }

            to {
                transform: translate(40px, 30px) scale(1.12);
            }
        }

        @media (prefers-reduced-motion: reduce) {

            body::before,
            body::after {
                animation: none;
            }
        }

        .auth-card {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 420px;
            padding: 2.5rem;
            background-color: var(--card-bg);
            border-radius: 1.25rem;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .auth-logo img {
            filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.3));
            margin-bottom: 1rem;
        }

        .form-control,
        .form-select {
            background-color: var(--input-bg);
            border-color: var(--border-color);
            color: var(--text-main) !important;
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
        }

        .form-control:focus {
            background-color: var(--input-bg);
            border-color: var(--primary-accent);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .form-label {
            color: var(--text-muted);
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
        }

        .btn-primary {
            padding: 0.75rem;
            border-radius: 0.75rem;
            font-weight: 600;
            background-color: var(--primary-accent);
            border: none;
            transition: all 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(59, 130, 246, 0.2);
        }

        .text-muted {
            color: var(--text-muted) !important;
        }

        a {
            color: var(--primary-accent);
            text-decoration: none;
            font-weight: 500;
        }

        a:hover {
            text-decoration: underline;
        }

        /* Sistema de Validação Visual */
        .input-validation-wrapper {
            position: relative;
            width: 100%;
        }

        .input-validation-wrapper .form-control,
        .input-validation-wrapper .form-select {
            padding-right: 40px !important;
        }

        .validation-icon {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            align-items: center;
            width: 18px;
            height: 18px;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
            z-index: 4;
        }

        .validation-icon.icon-success {
            color: #198754;
        }

        .validation-icon.icon-error {
            color: #dc3545;
        }

        .mb-3.has-success .validation-icon.icon-success {
            opacity: 1;
        }

        .mb-3.has-error .validation-icon.icon-error {
            opacity: 1;
        }

        .mb-3.has-success .form-control {
            border-color: #198754 !important;
            box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.15);
        }

        .mb-3.has-error .form-control {
            border-color: #dc3545 !important;
            box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
        }

        .field-error-message {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 6px;
            padding: 6px 10px;
            background: rgba(220, 53, 69, 0.1);
            border: 1px solid rgba(220, 53, 69, 0.3);
            border-radius: 6px;
            font-size: 0.8rem;
            color: #dc3545;
            animation: fadeInUp 0.3s ease-out;
        }

        .field-error-message svg {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
        }

        @keyframes formShake {

            0%,
            100% {
                transform: translateX(0);
            }

            10%,
            30%,
            50%,
            70%,
            90% {
                transform: translateX(-4px);
            }

            20%,
            40%,
            60%,
            80% {
                transform: translateX(4px);
            }
        }

        .form-shake {
            animation: formShake 0.5s ease-in-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(5px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }