/* ============================================================
   VARIABLES — colores principales
   Verde favorito de ella + paleta floral (girasol, clavel, tulipán)
============================================================ */
:root {
    /* Verde favorito de ella */
    --green:        #4CAF50;
    --green-dark:   #2E7D32;
    --green-light:  #E8F5E9;
    --green-mid:    #A5D6A7;

    /* Girasol */
    --sun:          #FFD700;
    --sun-dark:     #E6A817;
    --sun-light:    #FFF9C4;

    /* Clavel */
    --carn:         #FF6B8A;
    --carn-dark:    #C2185B;
    --carn-light:   #FCE4EC;

    /* Tulipán */
    --tulip:        #CE93D8;
    --tulip-dark:   #7B1FA2;
    --tulip-light:  #F3E5F5;

    /* Neutros */
    --cream:        #FAFDF6;
    --warm:         #F1F8E9;
    --text:         #1B3A1E;
    --text-mid:     #4A7C59;
    --text-soft:    #7CB87E;
    --white:        #FFFFFF;

    /* Sombras y efectos */
    --shadow:       0 8px 30px rgba(46, 125, 50, 0.12);
    --shadow-hover: 0 14px 40px rgba(46, 125, 50, 0.22);
    --radius:       22px;
    --radius-sm:    13px;
    --ease:         0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background: var(--cream);
    color: var(--text);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============================================================
   PARTÍCULAS FLOTANTES DE FONDO
============================================================ */
#particles-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    animation: floatUp linear infinite;
    opacity: 0;
    user-select: none;
    pointer-events: none;
}

@keyframes floatUp {
    0%   { opacity: 0;   transform: translateY(105vh) rotate(0deg) scale(0.8); }
    8%   { opacity: 0.75; }
    88%  { opacity: 0.55; }
    100% { opacity: 0;   transform: translateY(-10vh) rotate(380deg) scale(1.1); }
}

/* ============================================================
   BOTÓN MÚSICA
============================================================ */
.music-btn {
    position: fixed;
    top: 15px;
    right: 15px;
    z-index: 1000;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--green), var(--green-dark));
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(46,125,50,.4);
    transition: var(--ease);
    display: flex;
    align-items: center;
    justify-content: center;
}
.music-btn:hover { transform: scale(1.12); box-shadow: 0 7px 22px rgba(46,125,50,.5); }
.music-btn.paused { background: linear-gradient(135deg,#aaa,#888); }

/* ============================================================
   BOTONES
============================================================ */
.btn-primary {
    background: linear-gradient(135deg, var(--green), var(--green-dark));
    color: #fff;
    border: none;
    padding: 14px 38px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--ease);
    box-shadow: 0 4px 18px rgba(46,125,50,.35);
    letter-spacing: .4px;
}
.btn-primary:hover  { transform: translateY(-3px); box-shadow: 0 9px 26px rgba(46,125,50,.45); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: linear-gradient(135deg, var(--sun), var(--sun-dark));
    color: var(--text);
    border: none;
    padding: 13px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--ease);
    box-shadow: 0 4px 14px rgba(230,168,23,.3);
}
.btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(230,168,23,.4); }

.btn-outline {
    background: transparent;
    color: var(--green-dark);
    border: 2px solid var(--green);
    padding: 13px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--ease);
}
.btn-outline:hover { background: var(--green-light); transform: translateY(-3px); }

.hidden { display: none !important; }

/* ============================================================
   SISTEMA DE SECCIONES
============================================================ */
.screen {
    display: none;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.screen.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.screen.fade-in  { animation: fadeIn  0.75s ease forwards; }
.screen.fade-out { animation: fadeOut 0.5s ease forwards; }

@keyframes fadeIn  { from { opacity:0; transform:translateY(18px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeOut { from { opacity:1; transform:translateY(0); }  to { opacity:0; transform:translateY(-16px); } }


/* ============================================================
   SECCIÓN 1 — BIENVENIDA
============================================================ */
#welcome-screen {
    background: linear-gradient(155deg, #F1F8E9 0%, #E8F5E9 35%, #FFF9C4 65%, #F3E5F5 100%);
    text-align: center;
    padding: 60px 24px;
    position: relative;
    overflow: hidden;
}

/* Filas decorativas de flores */
.deco-row {
    position: absolute;
    left: 0; right: 0;
    display: flex;
    justify-content: center;
    gap: 14px;
    padding: 6px 0;
}
.deco-top    { top: 10px; }
.deco-bottom { bottom: 10px; }

.deco-flower { font-size: 1.9rem; animation: sway 3s ease-in-out infinite; }
.deco-flower.f2 { animation-delay: .35s; }
.deco-flower.f3 { animation-delay: .7s;  }
.deco-flower.f4 { animation-delay: 1.05s; }
.deco-flower.f5 { animation-delay: 1.4s; }
.deco-flower.f6 { animation-delay: 1.75s; }

@keyframes sway {
    0%,100% { transform: rotate(-9deg) translateY(0); }
    50%      { transform: rotate(9deg) translateY(-6px); }
}

/* Contenido central de bienvenida */
.welcome-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 13px;
    max-width: 620px;
}

.heart-pulse {
    font-size: 3.2rem;
    animation: heartbeat 1.6s ease-in-out infinite;
}
@keyframes heartbeat {
    0%,100% { transform: scale(1); }
    20%      { transform: scale(1.25); }
    40%      { transform: scale(1.05); }
    60%      { transform: scale(1.15); }
}

.welcome-title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    color: var(--green-dark);
    font-style: italic;
    text-shadow: 2px 3px 0 var(--green-mid), 0 0 28px rgba(46,125,50,.18);
    line-height: 1.1;
}

.title-flowers { font-size: 1.6rem; letter-spacing: 8px; }

.welcome-sub  { font-size: 1.2rem; color: var(--text-mid); font-style: italic; }

.welcome-name {
    font-size: clamp(2.2rem, 5.5vw, 3.8rem);
    color: var(--carn-dark);
    font-style: italic;
    text-shadow: 2px 2px 0 var(--carn-light), 0 0 24px rgba(194,24,91,.2);
    animation: nameGlow 3s ease-in-out infinite;
}
@keyframes nameGlow {
    0%,100% { text-shadow: 2px 2px 0 var(--carn-light); }
    50%      { text-shadow: 2px 2px 0 var(--carn-light), 0 0 22px var(--carn); }
}

.welcome-from { font-size: 1.1rem; color: var(--text-mid); }
.welcome-hint { font-size: .95rem; color: var(--text-soft); font-style: italic; }


/* ============================================================
   SECCIÓN 2 — QUIZ
============================================================ */
#quiz-section {
    background: linear-gradient(155deg, #F1F8E9, #FFF9C4 60%, #F3E5F5);
    padding: 20px;
    align-items: stretch;
    justify-content: flex-start;
}

.quiz-wrapper {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
    min-height: 100vh;
}

.quiz-header { text-align: center; }

.quiz-logo {
    font-size: 1.05rem;
    color: var(--green-dark);
    font-style: italic;
    margin-bottom: 10px;
}

.progress-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 7px;
}

.q-counter {
    font-size: .92rem;
    color: var(--text-mid);
    font-style: italic;
}

.progress-track {
    width: 100%;
    max-width: 420px;
    height: 9px;
    background: var(--green-light);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--green-mid);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--green), var(--green-dark));
    border-radius: 10px;
    transition: width .55s ease;
}

/* Tarjeta de pregunta */
.question-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid rgba(76,175,80,.15);
    animation: cardIn .5s ease;
}
@keyframes cardIn {
    from { opacity:0; transform:scale(.95) translateY(12px); }
    to   { opacity:1; transform:scale(1) translateY(0); }
}

.q-img-wrap {
    position: relative;
    width: 100%;
    height: 360px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--green-light), var(--sun-light), var(--carn-light));
}
.q-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .5s ease;
}
.q-img-fade {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 70px;
    background: linear-gradient(transparent, var(--white));
}

.q-body { padding: 26px; }

.q-text {
    font-size: 1.18rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 22px;
    line-height: 1.55;
}

/* Opciones del quiz */
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 13px;
    margin-bottom: 22px;
}

.option-btn {
    background: var(--cream);
    border: 2px solid var(--green-mid);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-family: inherit;
    font-size: .95rem;
    color: var(--text);
    cursor: pointer;
    transition: var(--ease);
    text-align: left;
    line-height: 1.45;
}
.option-btn:hover:not(:disabled) {
    border-color: var(--green);
    background: var(--green-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 14px rgba(76,175,80,.2);
}
.option-btn.correct {
    background: linear-gradient(135deg,#E8F5E9,#C8E6C9);
    border-color: #4CAF50;
    color: #1B5E20;
    animation: correctPop .4s ease;
}
.option-btn.wrong {
    background: linear-gradient(135deg,#FFEBEE,#FFCDD2);
    border-color: #E53935;
    color: #B71C1C;
    animation: wrongShake .45s ease;
}
.option-btn.show-correct {
    background: linear-gradient(135deg,#E8F5E9,#C8E6C9);
    border-color: #4CAF50;
}
.option-btn:disabled { cursor: not-allowed; opacity: .85; }

@keyframes correctPop {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.05); }
    100% { transform: scale(1); }
}
@keyframes wrongShake {
    0%,100% { transform: translateX(0); }
    25%     { transform: translateX(-7px); }
    75%     { transform: translateX(7px); }
}

.q-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.feedback-msg {
    font-size: 1rem;
    font-style: italic;
    min-height: 24px;
    color: var(--green-dark);
    flex: 1;
}


/* ============================================================
   SECCIÓN 3 — QUIZ COMPLETADO
============================================================ */
#quiz-complete {
    background: linear-gradient(155deg, #F1F8E9, #E8F5E9 50%, #FFF9C4);
    text-align: center;
    padding: 50px 24px;
}

.complete-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 520px;
}

.complete-emoji {
    font-size: 4.5rem;
    animation: bounce 1s ease-in-out infinite;
}
@keyframes bounce {
    0%,100% { transform: translateY(0); }
    50%      { transform: translateY(-16px); }
}

.complete-title {
    font-size: clamp(1.9rem, 4vw, 3rem);
    color: var(--green-dark);
    font-style: italic;
}

.complete-sub, .complete-hint { font-size: 1.1rem; color: var(--text-mid); }

.score-display {
    font-size: 1.2rem;
    color: var(--green-dark);
    font-weight: bold;
    background: var(--green-light);
    padding: 8px 22px;
    border-radius: 50px;
    border: 2px solid var(--green-mid);
}

.complete-flowers { font-size: 1.9rem; letter-spacing: 10px; }


/* ============================================================
   SECCIÓN 4 — TESTAMENTO CON PINGÜINITO
============================================================ */
#testament-section {
    background: linear-gradient(155deg, #F1F8E9 0%, #E8F5E9 40%, #FFF9C4 70%, #F3E5F5 100%);
    padding: 50px 20px 80px;
    align-items: flex-start;
    justify-content: flex-start;
}

.testament-wrap {
    width: 100%;
    max-width: 740px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 26px;
}

.testament-title {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    color: var(--green-dark);
    text-align: center;
    font-style: italic;
}

/* ============================================================
   PISTA DEL PINGÜINITO
============================================================ */
.penguin-track {
    width: 100%;
    height: 105px;
    position: relative;
    background: linear-gradient(to bottom, transparent 0%, rgba(232,245,233,.6) 100%);
    border-bottom: 2px dashed var(--green-mid);
    border-radius: 12px;
    overflow: visible;
}

/* ============================================================
   PINGÜINITO (hecho 100% en CSS — no requiere ninguna imagen)
============================================================ */
.penguin {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 64px;
    height: 95px;
    transition: left .18s linear;
    filter: drop-shadow(2px 5px 7px rgba(0,0,0,.14));
}

/* Cuerpo */
.p-body {
    width: 54px;
    height: 74px;
    background: #1a1a2e;
    border-radius: 50% 50% 42% 42%;
    position: relative;
    margin: 0 auto;
    animation: waddle .55s ease-in-out infinite alternate;
}
@keyframes waddle {
    0%   { transform: rotate(-4.5deg) translateY(0); }
    100% { transform: rotate(4.5deg)  translateY(-3px); }
}

/* Barriga */
.p-belly {
    position: absolute;
    width: 33px;
    height: 46px;
    background: #F5F0E8;
    border-radius: 46% 46% 42% 42%;
    top: 15px;
    left: 10px;
}

/* Ojos */
.p-eye {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    top: 15px;
}
.p-eye-l { left: 9px; }
.p-eye-r { right: 9px; }

.p-pupil {
    width: 5px;
    height: 5px;
    background: #1a1a2e;
    border-radius: 50%;
    position: absolute;
    top: 2.5px;
    left: 2.5px;
}

/* Pico */
.p-beak {
    position: absolute;
    width: 15px;
    height: 8px;
    background: #FF8C00;
    border-radius: 0 0 8px 8px;
    top: 27px;
    left: 19px;
}

/* Alas */
.p-wing {
    position: absolute;
    width: 15px;
    height: 32px;
    background: #1a1a2e;
    border-radius: 50%;
    top: 22px;
}
.p-wing-l {
    left: -9px;
    transform-origin: top center;
    animation: wingL .55s ease-in-out infinite alternate;
}
.p-wing-r {
    right: -9px;
    transform-origin: top center;
    animation: wingR .55s ease-in-out infinite alternate;
}
@keyframes wingL { 0% { transform:rotate(-18deg); } 100% { transform:rotate(14deg); } }
@keyframes wingR { 0% { transform:rotate(14deg);  } 100% { transform:rotate(-18deg); } }

/* Pies */
.p-feet {
    display: flex;
    justify-content: center;
    gap: 9px;
    margin-top: 3px;
}
.p-foot {
    width: 19px;
    height: 10px;
    background: #FF8C00;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}
.p-foot-l {
    transform-origin: right center;
    animation: footL .55s ease-in-out infinite alternate;
}
.p-foot-r {
    transform-origin: left center;
    animation: footR .55s ease-in-out infinite alternate;
}
@keyframes footL { 0% { transform:rotate(-22deg) translateY(-4px); } 100% { transform:rotate(12deg) translateY(0); } }
@keyframes footR { 0% { transform:rotate(12deg) translateY(0);   } 100% { transform:rotate(-22deg) translateY(-4px); } }

/* ============================================================
   TEXTO DEL TESTAMENTO
============================================================ */
.testament-text {
    width: 100%;
    background: var(--white);
    border-radius: var(--radius);
    padding: 38px 44px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(76,175,80,.14);
    min-height: 180px;
    position: relative;
    line-height: 1.95;
}

.testament-text::before {
    content: '\201C';
    position: absolute;
    top: 8px;
    left: 18px;
    font-size: 5.5rem;
    color: var(--green-mid);
    font-family: Georgia,serif;
    line-height: 1;
    opacity: .7;
}

.testament-para {
    font-size: 1.05rem;
    color: var(--text);
    margin-bottom: 22px;
    text-indent: 2.2em;
    line-height: 1.95;
}

/* ============================================================
   MENSAJE FINAL ESPECIAL
============================================================ */
.final-love-msg {
    text-align: center;
    padding: 34px 28px;
    background: linear-gradient(135deg, var(--green-light), var(--sun-light), var(--carn-light), var(--tulip-light));
    border-radius: var(--radius);
    box-shadow: 0 10px 34px rgba(46,125,50,.22);
    width: 100%;
    animation: finalPop 1s ease;
    border: 2px solid var(--green-mid);
}
@keyframes finalPop {
    0%  { opacity:0; transform:scale(.78); }
    65% { transform:scale(1.04); }
    100%{ opacity:1; transform:scale(1); }
}

.final-heart {
    font-size: 3.2rem;
    animation: heartbeat 1.6s ease-in-out infinite;
    margin-bottom: 12px;
}

.final-text {
    font-size: clamp(1.25rem, 3.2vw, 1.9rem);
    color: var(--green-dark);
    font-style: italic;
    font-weight: bold;
    line-height: 1.6;
}

/* Resaltado para #17 y #ParaSiempre */
.hl {
    color: var(--carn-dark);
    font-size: 1.15em;
    text-shadow: 1px 1px 0 var(--carn-light);
    animation: nameGlow 2.5s ease-in-out infinite;
}

/* Botones finales */
.end-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 6px;
}

/* Botón "Leer completo" — sutil, aparece durante el typing */
.btn-skip-typing {
    background: transparent;
    color: var(--text-soft);
    border: 1.5px dashed var(--green-mid);
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 0.88rem;
    font-family: inherit;
    font-style: italic;
    cursor: pointer;
    transition: var(--ease);
    letter-spacing: 0.3px;
    align-self: center;
}
.btn-skip-typing:hover {
    background: var(--green-light);
    color: var(--green-dark);
    border-color: var(--green);
    transform: translateY(-2px);
}

/* Estado de carga de imagen — fade suave */
.q-img { transition: opacity 0.18s ease; }


/* ============================================================
   PLACEHOLDER DE SUBIDA DE IMAGEN (nuevo)
   Aparece dentro de .q-img-wrap cuando la imagen no existe.
   Clic en él abre el selector de archivos del sistema.
============================================================ */
.q-img-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--green-light), var(--sun-light));
    border: 3px dashed var(--green-mid);
    border-radius: var(--radius) var(--radius) 0 0;
    cursor: pointer;
    transition: background var(--ease), border-color var(--ease), transform .2s ease;
    user-select: none;
    z-index: 2;
}

.q-img-placeholder:hover:not(.uploading) {
    background: linear-gradient(135deg, #d0edda, #fff9b0);
    border-color: var(--green);
    transform: scale(1.012);
}

.q-img-ph-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 9px;
    text-align: center;
    padding: 18px;
}

.q-img-ph-icon {
    font-size: 2.6rem;
    line-height: 1;
    display: block;
    transition: transform .3s ease;
}
.q-img-placeholder:hover:not(.uploading) .q-img-ph-icon {
    transform: scale(1.18) translateY(-4px);
}

.q-img-ph-text {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--green-dark);
    font-family: Georgia, serif;
    font-style: italic;
}

.q-img-ph-sub {
    font-size: .82rem;
    color: var(--text-soft);
    font-style: italic;
}

/* Estado: archivo subiendo */
.q-img-placeholder.uploading {
    cursor: wait;
    border-color: var(--sun-dark);
    background: linear-gradient(135deg, var(--sun-light), #fff9e6);
    animation: phPulse 1s ease-in-out infinite;
}
@keyframes phPulse {
    0%,100% { opacity: 1;   }
    50%      { opacity: .72; }
}

/* Estado: subida exitosa */
.q-img-placeholder.success {
    border-color: var(--green);
    background: linear-gradient(135deg, #d0edda, #b8e0be);
    cursor: default;
}

/* Estado: error en la subida */
.q-img-placeholder.error {
    border-color: var(--carn-dark);
    background: linear-gradient(135deg, #fce4ec, #ffd6e0);
    animation: none;
}
.q-img-placeholder.error .q-img-ph-text {
    color: var(--carn-dark);
}


/* ============================================================
   RESPONSIVE — MÓVILES
============================================================ */
@media (max-width: 620px) {
    .options-grid { grid-template-columns: 1fr; }

    .q-img-wrap { height: 280px; }

    .testament-text {
        padding: 30px 22px;
    }
    .testament-text::before { font-size: 3.8rem; }

    .deco-flower { font-size: 1.4rem; }
    .deco-row    { gap: 9px; }

    .btn-primary,
    .btn-secondary,
    .btn-outline {
        width: 100%;
        text-align: center;
    }

    .end-actions { flex-direction: column; align-items: center; }

    .penguin-track { height: 88px; }
    .penguin       { width: 52px; height: 78px; }
    .p-body        { width: 44px; height: 60px; }
    .p-belly       { width: 26px; height: 36px; top: 12px; left: 9px; }
}

@media (max-width: 400px) {
    .welcome-title { font-size: 2rem; }
    .welcome-name  { font-size: 2.4rem; }
    .quiz-wrapper  { padding: 14px 0; }
}