@import url('https://fonts.googleapis.com/css2?family=IM+Fell+English:ital@0;1&family=VT323&display=swap');

/* --- TEMAS VISUALES --- */
:root, body.theme-crt {
    --color-principal: #00ff41;
    --color-fondo: #050505;
    --color-resaltado: #ff003c;
    --fuente-terminal: 'VT323', monospace;
    --sombra-texto: 0 0 4px rgba(0, 255, 65, 0.6), 0 0 10px rgba(0, 255, 65, 0.4);
    --sombra-marco: 0 0 15px rgba(0, 255, 65, 0.15);
    --mostrar-crt: block;
    --fondo-frame: rgba(0, 0, 0, 0.85);
}

body.theme-parchment {
    --color-principal: #2b1a0e;       /* Tinta sepia */
    --color-fondo: #e6d7bc;          /* Papel antiguo */
    --color-resaltado: #8b0000;       /* Tinta carmesí */
    --fuente-terminal: 'IM Fell English', serif;
    --sombra-texto: none;
    --sombra-marco: 2px 4px 15px rgba(43, 26, 14, 0.25);
    --mostrar-crt: none;             /* Sin líneas CRT */
    --fondo-frame: rgba(255, 255, 255, 0.3);
}

body.theme-amber {
    --color-principal: #ffb000;       /* Ámbar */
    --color-fondo: #0a0600;
    --color-resaltado: #ff3300;
    --fuente-terminal: 'VT323', monospace;
    --sombra-texto: 0 0 4px rgba(255, 176, 0, 0.6), 0 0 10px rgba(255, 176, 0, 0.4);
    --sombra-marco: 0 0 15px rgba(255, 176, 0, 0.15);
    --mostrar-crt: block;
    --fondo-frame: rgba(10, 6, 0, 0.85);
}

/* --- ESTRUCTURA GENERAL --- */
body {
    background-color: var(--color-fondo);
    color: var(--color-principal);
    font-family: var(--fuente-terminal);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto;
    text-rendering: optimizeLegibility;
    position: relative;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* EFECTOS CRT */
body::before {
    content: " ";
    display: var(--mostrar-crt);
    position: fixed;
    top: 0; left: 0; bottom: 0; right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.35) 50%);
    background-size: 100% 4px;
    z-index: 100;
    pointer-events: none;
    opacity: 0.2;
}

body::after {
    content: " ";
    display: var(--mostrar-crt);
    position: fixed;
    top: 0; left: 0; bottom: 0; right: 0;
    background: radial-gradient(circle, transparent 60%, rgba(0, 0, 0, 0.85) 100%);
    z-index: 99;
    pointer-events: none;
}

/* ENCABEZADO Y FOOTER */
header {
    font-size: 1.5rem;
    letter-spacing: 10px;
    text-shadow: var(--sombra-texto);
    border-bottom: 2px solid var(--color-principal);
    padding-bottom: 10px;
    width: 80%;
    max-width: 850px;
    text-align: center;
    z-index: 10;
}

footer {
    padding-top: 20px;
    padding-bottom: 10px;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
    width: 100%;    
    z-index: 10;
}

footer a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dashed var(--color-principal);
}

/* MARCO Y TEXTO NARRATIVO */
.terminal-frame {
    border: 1px solid var(--color-principal);
    background: var(--fondo-frame);
    box-shadow: var(--sombra-marco);
    max-width: 850px;
    width: 100%;
    border-radius: 4px;
    overflow: hidden;
    margin: 10px 0;                  /* Margen ligeramente ajustado */
    z-index: 10;
    transition: all 0.4s ease;
}

.terminal-header {
    background-color: rgba(125, 125, 125, 0.1);
    border-bottom: 1px solid var(--color-principal);
    padding: 8px 15px;
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    letter-spacing: 2px;
    opacity: 0.8;
}

#output {
    font-size: 1.85rem;              /* Tamaño ligeramente más compacto y legible */
    line-height: 1.35;
    max-width: 800px;
    text-align: left;
    height: 210px;                   /* ALTURA FIJA: Evita que el contenedor crezca o empuje botones */
    overflow-y: auto;                /* Scroll interno automático cuando el texto es largo */
    padding: 20px 25px;
    box-sizing: border-box;
    color: var(--color-principal);
    text-shadow: var(--sombra-texto);
    transition: all 0.3s ease;
}

/* SCROLLBAR RETRO INTEGRADA AL TEMA */
#output::-webkit-scrollbar {
    width: 6px;
}

#output::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

#output::-webkit-scrollbar-thumb {
    background: var(--color-principal);
    border-radius: 0px;
}

body.theme-parchment #output {
    font-size: 1.6rem;
    font-style: italic;
}

#output::after {
    content: " █";
    animation: parpadeoCursor 0.8s infinite steps(2, start);
    color: var(--color-principal);
}

/* BOTONES Y ACCIONES GENERALES */
button, #glitch-btn {
    background: transparent;
    border: 1px solid var(--color-principal);
    color: var(--color-principal);
    font-family: var(--fuente-terminal);
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.15s ease;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

#glitch-btn {
    border-width: 2px;
    font-size: 1.8rem;
    padding: 12px 35px;
    letter-spacing: 4px;
    margin-bottom: 15px;
    z-index: 10;
}

/* BOTONERA PRINCIPAL ASCII */
.controls-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.8rem;
    margin-bottom: 0.8rem;
    z-index: 10;
}

/* BOTONES DE AVANCE ASCII ([<--] y [-->]) */
.btn-paso {
    font-family: var(--fuente-terminal);
    font-size: 1.3rem;
    min-width: 65px;               /* Ancho fijo para que no cambien de tamaño */
    padding: 0.5rem 0.8rem;
    text-align: center;
    background: transparent;
    color: var(--color-principal);
    border: 1px solid var(--color-principal);
    cursor: pointer;
    outline: none;
    box-shadow: none;
    transition: all 0.15s ease-in-out;
}

/* Hover Retro: Inversión limpia según el tema */
.btn-paso:hover {
    background: var(--color-principal);
    color: var(--color-fondo);
    box-shadow: var(--sombra-texto);
}

/* Estado al hacer click */
.btn-paso:active {
    transform: translateY(2px);
}

/* Estado deshabilitado durante la animación de transición */
.btn-paso:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: transparent;
    color: var(--color-principal);
}

/* BOTONERA DE ACCIONES SECUNDARIAS */
.button-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;                        /* Espaciado compacto entre botones */
    margin-bottom: 10px;
    width: 100%;
    max-width: 850px;
    z-index: 10;
}

.button-container button {
    font-size: 1rem;
    padding: 6px 14px;
    letter-spacing: 1px;
}

.button-container button:hover {
    background: var(--color-principal);
    color: var(--color-fondo);
}

/* MODAL Y CONSOLA DE COMANDOS */
.terminal-modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(5, 5, 5, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-content {
    border: 1px solid var(--color-principal);
    background-color: var(--color-fondo);
    width: 85%;
    max-width: 550px;
    box-shadow: var(--sombra-marco);
    border-radius: 4px;
    overflow: hidden;
}

.modal-body {
    padding: 25px;
    font-size: 1.1rem;
    line-height: 1.5;
    text-align: left;
}

.modal-body h2 {
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 10px;
    letter-spacing: 2px;
    border-bottom: 1px dashed var(--color-principal);
    padding-bottom: 5px;
}

.close-btn {
    cursor: pointer;
    color: var(--color-resaltado);
}

.terminal-divider {
    border: none;
    border-top: 1px solid var(--color-principal);
    opacity: 0.3;
    margin: 20px 0;
}

.stat-highlight {
    color: var(--color-principal);
    font-weight: bold;
}

.input-line {
    margin-top: 25px;
    display: flex;
    align-items: center;
    border-top: 1px dashed var(--color-principal);
    padding-top: 15px;
    font-size: 1.1rem;
}

#terminal-input {
    background: transparent;
    border: none;
    color: var(--color-principal);
    font-family: var(--fuente-terminal);
    font-size: 1.1rem;
    width: 100%;
    outline: none;
    margin-left: 10px;
    caret-color: var(--color-principal);
}

/* ANIMACIONES */
@keyframes parpadeoCursor {
    to { opacity: 0; }
}

.glitch-active {
    animation: saltoLinea 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes saltoLinea {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    45% {
        transform: translateY(-14px);
        opacity: 0.2;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

/* MÓVIL VERTICAL */
@media (max-width: 600px) {
    #output {
        font-size: 1.5rem;
        line-height: 1.3;
        min-height: 180px;
        padding: 15px 20px;
    }

    .button-container {
        flex-direction: column;
        align-items: stretch;
        padding: 0 10px;
    }

    button {
        font-size: 1.1rem;
        padding: 12px;
        text-align: center;
    }

    .terminal-modal .modal-content {
        width: 95%;
        max-height: 90vh;
        overflow-y: auto;
    }
}