@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --error: #f85149;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

/* Canvas de partículas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.login-container {
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 2;
}

.login-box {
    background: rgba(22, 27, 34, 0.8);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 48px;
    box-shadow: 0 16px 70px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
}

.logo {
    text-align: center;
    margin-bottom: 48px;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.logo p {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.logo .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
}

.etapa {
    display: none;
}

.etapa.ativa {
    display: block;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.etapa h2 {
    font-size: 1.75rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.descricao {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input::placeholder {
    color: var(--text-secondary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
    background: var(--bg-secondary);
}

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(88, 166, 255, 0.3);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-link {
    background: transparent;
    color: var(--accent);
    margin-top: 16px;
    width: 100%;
}

.btn-link:hover {
    background: var(--bg-tertiary);
    color: var(--accent-hover);
}

.mensagem {
    margin-top: 24px;
    padding: 14px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    display: none;
    border-left: 3px solid;
}

.mensagem.sucesso {
    background: rgba(63, 185, 80, 0.1);
    color: var(--success);
    border-color: var(--success);
}

.mensagem.erro {
    background: rgba(248, 81, 73, 0.1);
    color: var(--error);
    border-color: var(--error);
}

.login-footer {
    text-align: center;
    margin-top: 32px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

@media (max-width: 480px) {
    .login-box {
        padding: 32px 24px;
    }

    .logo h1 {
        font-size: 2.5rem;
    }

    .etapa h2 {
        font-size: 1.5rem;
    }
}