/* =========================
   RESET Y BASE
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* =========================
   VARIABLES
========================= */
:root {
    --bg-color: #0f172a;
    --primary-color: #38bdf8;
    --text-color: #e5e7eb;
    --muted-text: #94a3b8;
    --error-color: #ef4444;
}

/* =========================
   BODY
========================= */
body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
}

/* =========================
   LOGIN
========================= */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    background: rgba(255, 255, 255, 0.05);
    padding: 32px;
    border-radius: 14px;
    width: 100%;
    max-width: 360px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.login-box h2 {
    margin-bottom: 22px;
    color: var(--primary-color);
}

.login-box input {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 15px;
    border-radius: 10px;
    border: none;
    outline: none;
    font-size: 0.95rem;
}

.login-box input:focus {
    outline: 2px solid var(--primary-color);
}

.login-box button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background-color: var(--primary-color);
    color: #000;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.login-box button:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.error {
    margin-top: 10px;
    color: var(--error-color);
    font-size: 0.9rem;
}

/* =========================
   HEADER
========================= */
.header {
    padding: 20px 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 48px;
}

.brand {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* =========================
   LOGOUT BUTTON
========================= */
.logout {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.logout:hover {
    background: var(--primary-color);
    color: #000;
}

/* =========================
   MAIN CONTENT
========================= */
.main-content {
    min-height: calc(100vh - 140px);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px 20px;
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.hero p {
    color: var(--muted-text);
    font-size: 1rem;
}

/* =========================
   FOOTER
========================= */
.footer {
    text-align: center;
    padding: 15px;
    font-size: 0.85rem;
    color: var(--muted-text);
    border-top: 1px solid rgba(255,255,255,0.08);
}

/* =========================
   UTILIDADES
========================= */
.hidden {
    display: none;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 600px) {
    .header {
        padding: 15px 20px;
    }

    .brand {
        font-size: 1.2rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .login-box {
        padding: 24px;
    }
}