:root {
    /* Paleta de colores */
    --bg-main: #120630;
    --bg-secondary: #1a094a;
    --bg-card: linear-gradient(135deg, #1a094a, #2a155c);
    --bg-hover: #3b237e;
    
    --accent-primary: #FF6F61;
    --accent-hover: #FF4A3B;
    
    --text-main: #ffffff;
    --text-muted: #c2c2f0;
    
    /* Efectos Glassmorphism */
    --glass-bg: rgba(26, 9, 74, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    
    /* Sombras Premium */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(255, 111, 97, 0.4);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y tipografía base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding-top: 90px; /* Evita que el fixed header tape el contenido de las páginas */
}

/* Scrollbar estilizada */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-secondary);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}

/* Componentes Genéricos: Header / Navbar */
body > header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 40px;
    transition: var(--transition-normal);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.logo {
    flex: 1 0 200px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
}

.logo img {
    width: 50px; /* Reducido para verse más fino en un navbar sticky */
    height: 50px;
    transition: var(--transition-normal);
}

.logo h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
    white-space: nowrap;
}

.nav-links {
    flex: 0 1 auto;
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    padding: 5px 0;
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--text-main);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

#login-container {
    flex: 1 0 200px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

/* Botón de Login Premium en Navbar */
.login-btn {
    background-color: white;
    color: var(--bg-main);
    padding: 10px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
}

.login-btn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.login-btn .arrow {
    transition: var(--transition-fast);
}

.login-btn:hover .arrow {
    transform: translateX(4px);
}

/* Perfil de Usuario y Dropdown Premium */
.user-profile {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
    cursor: pointer;
    padding: 6px 14px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    transition: var(--transition-normal);
}

.user-profile:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
}

.user-profile .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-primary);
}

.user-profile .username {
    font-size: 14px;
    font-weight: 600;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 220px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: fadeInDown var(--transition-fast);
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.dropdown-menu.open {
    display: flex;
}

.dropdown-menu p {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-main);
    margin: 0;
}

.dropdown-menu .profile-image {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-primary);
    box-shadow: var(--shadow-sm);
    margin: 0 auto;
}

.dropdown-menu a {
    width: 100%;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
    text-align: center;
    display: block;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.dropdown-menu a[onclick*="logout"] {
    color: #ff4c4c;
}

.dropdown-menu a[onclick*="logout"]:hover {
    background: rgba(255, 76, 76, 0.1);
    color: #ff6666;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Botones Base */
.btn-primary {
    background-color: var(--accent-primary);
    color: white;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: white;
    color: var(--bg-main);
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.btn-secondary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer Base */
footer {
    background-color: var(--bg-secondary);
    padding: 30px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    border-top: 1px solid var(--glass-border);
}

footer a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

footer a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}


/* =========================================================================
   Chatbot Premium
   ========================================================================= */
#chatbot {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

#chatbot-icon {
    background: linear-gradient(135deg, var(--accent-primary), #FF8A75);
    color: white;
    border-radius: 50%;
    width: 65px;
    height: 65px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    transition: var(--transition-normal);
    font-size: 28px;
}

#chatbot-icon:hover {
    transform: scale(1.1) rotate(10deg);
}

#chatbot-window {
    background-color: var(--bg-secondary);
    border-radius: 20px;
    width: 380px;
    max-height: 600px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform-origin: bottom right;
}

#chatbot-window.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    display: flex;
}

#chatbot-header {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

#chatbot-header button {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition-fast);
}

#chatbot-header button:hover {
    transform: scale(1.2);
}

#chatbot-messages {
    padding: 20px;
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--bg-main);
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 250px;
}

.message {
    padding: 12px 16px;
    border-radius: 16px;
    max-width: 80%;
    font-size: 14px;
    line-height: 1.5;
}

.message.user-message {
    background-color: var(--bg-hover);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.bot-message {
    background-color: var(--bg-secondary);
    color: var(--text-muted);
    border: 1px solid var(--glass-border);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

#chatbot-input {
    display: flex;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    gap: 10px;
}

#user-input {
    flex-grow: 1;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 12px 16px;
    color: white;
    font-size: 14px;
    transition: var(--transition-fast);
}

#user-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: rgba(255, 255, 255, 0.1);
}

#chatbot-input button {
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 20px;
    padding: 10px 20px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

#chatbot-input button:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(255, 111, 97, 0.3);
}

#chatbot-window.hidden {
    display: none;
}