/*
============================================================================
PROJECTE: Recta Numèrica Doble
FITXER: css/recta-numerica.css
ROL: Estils complets de l'aplicació (standalone, sense shared.css).
ESTÈTICA: Meteorologia / visualització científica — blaus oceànics, net.
FONT: Barlow (Google Fonts)
============================================================================
*/

/* ---- VARIABLES ---- */
:root {
    --panel-width:   92vw;
    --primary:       #0077b6;
    --primary-light: #e0f4ff;
    --primary-dark:  #023e8a;
    --accent:        #00b4d8;
    --bg:            #f0f9ff;
    --panel:         #ffffff;
    --text:          #0f172a;
    --muted:         #64748b;
    --border:        #e2e8f0;
    --border-heavy:  #94a3b8;
    --success:       #059669;
    --success-light: #d1fae5;
    --danger:        #dc2626;
    --danger-light:  #fee2e2;
    --warn:          #d97706;
    --warn-light:    #fef3c7;
    --radius:        10px;
    --shadow:        0 4px 20px rgba(0,0,0,0.07);
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ---- BODY ---- */
body {
    font-family: 'Barlow', 'Segoe UI', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    height: 100vh;            /* fallback per a Chrome < 108 (Chromebooks antics) */
    height: 100dvh;           /* millora en browsers moderns */
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 16px 12px;
}

/* ---- CAPÇALERA ---- */
.title-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    width: 100%;
    max-width: var(--panel-width);
    justify-content: center;
}
.title-row h1 {
    font-size: 1.5em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary-dark);
}
.home-icon-link {
    width: 48px; height: 48px;
    opacity: 0.7;
    transition: opacity 0.2s;
    display: block;
    flex-shrink: 0;
}
.home-icon-link:hover { opacity: 1; }
.home-icon-link img   { width: 100%; height: 100%; object-fit: contain; }

/* ---- PANELL PRINCIPAL ---- */
.panel {
    background: var(--panel);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    border-top: 5px solid var(--primary);
    width: 100%;
    max-width: var(--panel-width);
    overflow: hidden;
    flex: 1 1 0;          /* ocupa l'altura restant després del title-row */
    display: flex;
    flex-direction: column;
    min-height: 0;        /* permet que flex fill redueixi per sota del contingut */
}

/* ---- GAME SCREEN: propaga l'altura flex fins a game-body ---- */
/* buildLevel() (recta-numerica.js) estableix style.display='flex' directament,
   que és la manera fiable en totes les versions de Chrome/Chromebook.
   Aquí només definim el layout quan és visible. */
#game-screen {
    flex-direction: column;
    flex: 1 1 0;
    min-height: 0;
}

/* ---- CAPÇALERA DEL JOC ---- */
.game-header {
    background: #f1f8ff;
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.header-left { display: flex; flex-direction: column; gap: 2px; }
#level-display  { font-size: 0.85em; color: var(--muted); font-weight: 500; }
#q-display      { font-size: 1.1em; font-weight: 700; color: var(--primary-dark); }
#score-display  { font-size: 1.1em; font-weight: 700; color: var(--success); font-family: monospace; }
#attempts-display {
    font-family: monospace;
    font-size: 1em;
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-heavy);
    background: white;
    color: var(--muted);
    font-weight: 600;
    transition: all 0.2s;
}
#attempts-display.danger { color: var(--danger); border-color: var(--danger); }

/* ---- LAYOUT DOS COLUMNES ---- */
.game-body {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    flex: 1 1 0;
    min-height: 0;
}

.game-left {
    width: 30%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding: 16px 14px 16px 20px;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    min-height: 0;
}

.game-right {
    width: 70%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 16px 12px 12px;
    overflow-y: auto;   /* [ROUND 2 — scroll vertical quan el gràfic no hi cap (Chromebook, etc.)] */
    min-height: 0;
}

/* ---- ETIQUETA EIX X (HTML, fora del SVG) ---- */
.axis-label-x {
    text-align: right;
    font-family: 'Barlow', sans-serif;
    font-size: 0.85em;
    color: #000000;
    padding-right: 4px;
    margin-top: 2px;
}

/* ---- GRÀFIC SVG ---- */
#graph-container {
    width: 100%;
}
#graph-container svg {
    border-radius: 6px;
    display: block;
    /* [ROUND 9 — width=90% de .game-right; aspect-ratio 560:420 calcula l'alçada automàticament.
       Robust a qualsevol viewport, zoom o plataforma. Tots els punts sempre visibles
       per construcció (cloud-engine garanteix x∈[-5,5] i y∈[p,q] dins el viewBox).] */
    width: 90%;
    height: auto;
    aspect-ratio: 560 / 420;
    height: auto;
    aspect-ratio: 560 / 420;
}

/* ---- PREGUNTA ---- */
#question-prompt {
    font-size: 1.05em;
    font-weight: 600;
    color: var(--primary-dark);
    line-height: 1.45;
    margin-bottom: 14px;
    /* Altura fixa = 3 línies: font-size * line-height * 3 */
    min-height: calc(1.05em * 1.45 * 3);
    display: flex;
    align-items: flex-end;
}

/* ---- OPCIONS: GRID (Q1/Q2) ---- */
.options-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ---- OPCIONS: LIST (Q3/Q4) ---- */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ---- BOTÓ D'OPCIÓ ---- */
@keyframes popIn {
    from { opacity: 0; transform: translateY(6px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0)   scale(1);    }
}

.btn-option {
    padding: 11px 13px;
    font-family: 'Barlow', sans-serif;
    font-size: 1em;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid var(--border);
    background: white;
    color: var(--text);
    cursor: pointer;
    text-align: center;
    line-height: 1.35;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
    opacity: 0;
    animation: popIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Botons de llista: indicador circular a l'esquerra */
.options-list .btn-option,
.options-grid .btn-option {
    text-align: left;
    justify-content: flex-start;
    gap: 12px;
    padding-left: 12px;
}
.options-list .btn-option::before,
.options-grid .btn-option::before {
    content: '';
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border-heavy);
    background: white;
    transition: border-color 0.15s, background 0.15s;
}
.options-list .btn-option:hover::before,
.options-grid .btn-option:hover::before {
    border-color: var(--primary);
    background: var(--primary-light);
}
.options-list .btn-option.correct::before,
.options-grid .btn-option.correct::before {
    border-color: var(--success) !important;
    background: var(--success) !important;
}
.options-list .btn-option.wrong::before,
.options-grid .btn-option.wrong::before {
    border-color: var(--danger) !important;
    background: var(--danger) !important;
}
.options-list .btn-option.reveal-answer::before,
.options-grid .btn-option.reveal-answer::before {
    border-color: #6ee7b7 !important;
    background: #6ee7b7 !important;
}

@media (hover: hover) {
    .btn-option:hover {
        background: var(--primary-light);
        border-color: var(--primary);
        transform: translateY(-2px);
    }
}
.btn-option:active      { transform: scale(0.97); }
.btn-option:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Estat: correcte */
.btn-option.correct {
    background: var(--success-light) !important;
    border-color: var(--success) !important;
    color: var(--success) !important;
}

/* Estat: erroni (clicat per l'alumne) */
.btn-option.wrong {
    background: var(--danger-light) !important;
    border-color: var(--danger) !important;
    color: var(--danger) !important;
    opacity: 1 !important;
    pointer-events: none;
    animation: shake 0.25s forwards;
}

/* Estat: correcte revelat quan s'esgoten els intents (verd clar, no taronja) */
.btn-option.reveal-answer {
    background: #d1fae5 !important;   /* verd molt clar */
    border-color: #6ee7b7 !important; /* verd menta */
    color: #065f46 !important;        /* verd fosc llegible */
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25%       { transform: translateX(-5px); }
    75%       { transform: translateX(5px); }
}

/* ---- FEEDBACK ---- */
.feedback-area {
    min-height: 40px;
    margin-top: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.95em;
    font-weight: 500;
    line-height: 1.5;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.feedback-correct {
    background: var(--success-light);
    border: 1.5px solid var(--success);
    color: #065f46;
}
.feedback-wrong {
    background: #f1f5f9;
    border: 1.5px solid #cbd5e1;
    color: #000000;
}
.feedback-neutral {
    background: #f8fafc;
    border: 1.5px solid #94a3b8;
    color: #334155;
}

/* ---- RESUM FINAL ---- */
#summary-screen { display: none; }
.summary-wrap {
    padding: 36px 24px 40px;
    text-align: center;
    animation: popIn 0.4s ease;
}
.summary-trophy   { font-size: 4em; margin-bottom: 10px; }
.summary-title    { font-size: 1.5em; font-weight: 700; color: var(--primary-dark); margin-bottom: 16px; }
.summary-score-row {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 12px;
}
.summary-score-label { font-size: 0.9em; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.summary-score-value { font-size: 2.2em; font-weight: 800; color: var(--primary); font-family: monospace; }

.summary-bar-bg {
    background: var(--border);
    border-radius: 99px;
    height: 12px;
    width: 100%;
    max-width: 360px;
    margin: 0 auto 24px;
    overflow: hidden;
}
.summary-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    border-radius: 99px;
    transition: width 0.8s ease;
}

.summary-stats {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.summary-stat {
    display: flex; flex-direction: column; align-items: center; gap: 3px;
    padding: 12px 18px;
    border-radius: var(--radius);
    min-width: 90px;
    border: 2px solid transparent;
}
.summary-stat--ok   { background: var(--success-light); border-color: #6ee7b7; }
.summary-stat--warn { background: var(--warn-light);    border-color: #fcd34d; }
.summary-stat--err  { background: var(--danger-light);  border-color: #fca5a5; }
.stat-num  { font-size: 1.8em; font-weight: 800; }
.summary-stat--ok   .stat-num { color: var(--success); }
.summary-stat--warn .stat-num { color: var(--warn);    }
.summary-stat--err  .stat-num { color: var(--danger);  }
.stat-desc { font-size: 0.78em; color: var(--muted); }

.btn-restart {
    padding: 13px 36px;
    background: var(--primary);
    color: white;
    font-family: 'Barlow', sans-serif;
    font-size: 1em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}
.btn-restart:hover  { background: var(--primary-dark); transform: translateY(-1px); }
.btn-restart:active { transform: scale(0.97); }

/* ---- BOTÓ SEGÜENT PREGUNTA (quan s'esgoten els intents) ---- */
.btn-next {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 13px 16px;
    background: var(--primary);
    color: white;
    font-family: 'Barlow', sans-serif;
    font-size: 1em;
    font-weight: 700;
    text-align: center;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    animation: popIn 0.25s ease forwards;
}
.btn-next:hover  { background: var(--primary-dark); transform: translateY(-1px); }
.btn-next:active { transform: scale(0.97); }


/* ---- BOTÓ TUTORIAL + ICONA REC — [ROUND 5 / actualitzat R6] ---- */
.btn-tutorial {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    font-family: 'Barlow', sans-serif;
    font-size: 0.9em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: white;
    background: var(--primary);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s, transform 0.1s;
}
.btn-tutorial:hover  { background: var(--primary-dark); transform: translateY(-1px); }
.btn-tutorial:active { transform: scale(0.97); }

.rec-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: #ff3b30;   /* vermell REC — valor fix intencionat */
    box-shadow: 0 0 0 2px rgba(255,59,48,0.35);
    /* [ROUND 6 — 4 cicles d'1s de parpelleig, després s'apaga definitivament] */
    animation:
        rec-blink 1s ease-in-out 4,
        rec-off   0s linear 1 4s forwards;
    flex-shrink: 0;
}
@keyframes rec-blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.25; }
}
@keyframes rec-off {
    to { opacity: 0; }
}

/* ---- OVERLAY FADE-OUT — [ROUND 5] ---- */
#fade-overlay {
    position: fixed;
    inset: 0;
    background: #000;
    opacity: 0;
    pointer-events: none;
    z-index: 9999;
    transition: opacity 1.5s ease;   /* [ROUND 6 — 1500ms, segons especificació] */
}
#fade-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* ---- RESPONSIU ---- */

/* Tablet: columnes més estretes però mantenim layout horitzontal */
@media (max-width: 780px) {
    .game-body { flex-direction: column-reverse; }
    .game-left, .game-right { width: 100%; border-right: none; }
    .game-left  { border-top: 1px solid var(--border); padding: 14px 14px 14px 14px; }
    .game-right { padding: 12px 14px 4px; }
}

@media (max-width: 600px) {
    body { padding: 10px 10px 30px; }
    .title-row h1  { font-size: 1.15em; }
    .game-header   { padding: 10px 14px; }
    #question-prompt { font-size: 1em; }
    .options-grid  { gap: 8px; }
    .btn-option    { font-size: 0.95em; padding: 10px 8px; min-height: 44px; }
    .feedback-area { font-size: 0.9em; }
}

@media (max-width: 400px) {
    .title-row h1 { font-size: 1em; letter-spacing: 0.5px; }
    .btn-tutorial { font-size: 0.75em; padding: 6px 10px; }
}

/* ---- INTEGRACIÓ game-core.js ---- */

/* El mini overlay s'injecta dins #game-screen (flex-column).
   El posicionem en absolut per cobrir tota l'àrea de joc sense
   desplaçar el layout de dues columnes. */
#game-screen { position: relative; }

#mini-victory-overlay {
    position: absolute;
    inset: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.96);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
}

/* session-end-screen i final-screen injectats per game-core:
   assegura scroll intern si el contingut és llarg */
#session-end-screen,
#final-screen {
    overflow-y: auto;
}