/* Configuración visual */

/* Elementos de la interfaz */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400;1,600&family=EB+Garamond:ital,wght@0,400;0,500;1,400;1,500&family=Caveat:wght@400;500;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;1,9..40,300&family=Sacramento&family=DM+Serif+Display:ital@0;1&display=swap');

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

/* Reglas de estilo global */
:root {
    /* Detalles de apariencia */
    --bg: #fdf6ee;
    --bg-card: #fef9f3;
    --bg-card2: #fffdf8;
    --text: #2c1b14;
    /* Detalles de apariencia */
    --text-light: #7a5c4d;
    --text-faint: #c4a898;
    --accent: #d4a5a5;
    --accent-soft: #f0d6d6;
    --gold: #c9a96e;
    --gold-soft: #e8d5b0;
    --shadow: rgba(180, 120, 100, 0.10);
    --shadow-deep: rgba(100, 60, 40, 0.14);
    --border: rgba(212, 165, 165, 0.25);
    --tape-color: rgba(212, 185, 165, 0.38);

    /* Elementos de la interfaz */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Caveat', cursive;
    --font-script: 'Caveat', cursive;
    --font-ui: 'DM Sans', system-ui, sans-serif;
    --font-signature: 'Sacramento', cursive;

    /* Configuración visual */
    --letter-max-width: 820px;
    --letter-padding-v: 4.5rem;
    --letter-padding-h: 5.5rem;
    --letter-padding-h-mobile: 1.85rem;

    /* Detalles de apariencia */
    --env-bg: #ecdccb;
    --env-fold: #d1bba4;
    /* Detalles de apariencia */
    --env-fold-bottom: #c4ab92;
    /* Detalles de apariencia */
    --env-flap-open: #dfcebd;
    --env-label-bg: #faf7f2;
    --env-border: rgba(180, 150, 130, 0.45);
    --env-shadow: rgba(160, 130, 110, 0.2);
    --env-texture-opacity: 0.08;

    /* Reglas de estilo global */
    --seal-bg: #bf4c30;
    --seal-inner: #8b2d1a;
    --seal-accent: #a83a23;
    --seal-text: #fde8e0;
}

/* Detalles de apariencia */
[data-theme="sage"] {
    --bg: #f4f7f2;
    --bg-card: #f8faf6;
    --bg-card2: #fafcf9;
    --text: #2d3a2e;
    --text-light: #6a856b;
    --text-faint: #a8c4a9;
    --accent: #7a9e7e;
    --accent-soft: #cce0cd;
    --gold: #a89468;
    --gold-soft: #d9cfa8;
    --shadow: rgba(80, 120, 80, 0.09);
    --tape-color: rgba(180, 210, 180, 0.38);

    /* Detalles de apariencia */
    --env-bg: #e6ede5;
    --env-fold: #dee6dd;
    --env-fold-bottom: #f0f4ef;
    --env-flap-open: #d8e0d7;
    --env-label-bg: #f8faf7;
    --env-border: rgba(122, 158, 126, 0.2);
    --env-shadow: rgba(80, 100, 80, 0.1);
}

/* Elementos de la interfaz */
[data-theme="dusty-rose"] {
    --bg: #fdf0f0;
    --bg-card: #fff5f5;
    --bg-card2: #fffafb;
    --text: #2b1820;
    /* Configuración visual */
    --text-light: #804051;
    --text-faint: #c49898;
    --accent: #c4858a;
    --accent-soft: #f0cccd;
    --gold: #c9a96e;
    --gold-soft: #e8d5b0;
    --shadow: rgba(180, 100, 110, 0.10);
    --tape-color: rgba(212, 165, 170, 0.38);

    /* Elementos de la interfaz */
    --env-bg: #f2e4e4;
    --env-fold: #dbbfbf;
    /* Detalles de apariencia */
    --env-fold-bottom: #c9a9a9;
    /* Elementos de la interfaz */
    --env-flap-open: #dfcece;
    --env-label-bg: #fffafa;
    --env-border: rgba(196, 133, 138, 0.3);
    --env-shadow: rgba(180, 130, 130, 0.15);
}

/* Configuración visual */
[data-theme="midnight"] {
    --bg: #0f1729;
    --bg-card: #141e35;
    --bg-card2: #18243e;
    --text: #e8dcc8;
    --text-light: #a0947c;
    --text-faint: #5a5040;
    --accent: #6b8cba;
    --accent-soft: #2a3d5c;
    --gold: #c9a96e;
    --gold-soft: #4a3820;
    --shadow: rgba(0, 0, 0, 0.35);
    --shadow-deep: rgba(0, 0, 0, 0.5);
    --border: rgba(107, 140, 186, 0.18);
    --tape-color: rgba(107, 140, 186, 0.25);

    /* Detalles de apariencia */
    --env-bg: #141e35;
    --env-fold: #18243e;
    --env-fold-bottom: #1c2b4a;
    --env-flap-open: #0f1729;
    --env-label-bg: #141e35;
    --env-border: rgba(107, 140, 186, 0.2);
    --env-shadow: rgba(0, 0, 0, 0.4);
    --env-texture-opacity: 0.03;
    --text: #e8dcc8;
    /* Elementos de la interfaz */

    /* Elementos de la interfaz */
    --seal-bg: #9b1c2e;
    --seal-inner: #7a1220;
    --seal-accent: #c94060;
    --seal-text: #fde8e8;
}

/* Configuración visual */
[data-theme="crimson"] {
    --bg: #1a050a;
    --bg-card: #250810;
    --bg-card2: #2d0a14;
    --text: #f8e8e0;
    --text-light: #d4a090;
    --text-faint: #8a4a40;
    --accent: #c03050;
    --accent-soft: #4d0f1a;
    --gold: #d4a780;
    --gold-soft: #5a2a1a;
    --shadow: rgba(0, 0, 0, 0.35);
    --shadow-deep: rgba(0, 0, 0, 0.55);
    --border: rgba(192, 48, 80, 0.25);
    --tape-color: rgba(192, 48, 80, 0.3);

    /* Detalles de apariencia */
    --env-bg: #250810;
    --env-fold: #2d0a14;
    --env-fold-bottom: #350c18;
    --env-flap-open: #1a050a;
    --env-label-bg: #250810;
    --env-border: rgba(192, 48, 80, 0.28);
    --env-shadow: rgba(0, 0, 0, 0.45);
    --env-texture-opacity: 0.02;

    /* Detalles de apariencia */
    --seal-bg: #a82035;
    --seal-inner: #8b1828;
    --seal-accent: #d04060;
    --seal-text: #f8e8e0;
}

/* Configuración visual */
[data-theme="obsidian"] {
    --bg: #050a07;
    --bg-card: #0a100c;
    --bg-card2: #0e1610;
    --text: #d8e8d0;
    --text-light: #6a9870;
    --text-faint: #2a4830;
    --accent: #2d6a4f;
    --accent-soft: #0d2018;
    --gold: #7ab89a;
    --gold-soft: #152a1e;
    --shadow: rgba(0, 0, 0, 0.45);
    --shadow-deep: rgba(0, 0, 0, 0.65);
    --border: rgba(45, 106, 79, 0.22);
    --tape-color: rgba(45, 106, 79, 0.28);

    /* Elementos de la interfaz */
    --env-bg: #0a100c;
    --env-fold: #0e1610;
    --env-fold-bottom: #121c14;
    --env-flap-open: #050a07;
    --env-label-bg: #0a100c;
    --env-border: rgba(45, 106, 79, 0.25);
    --env-shadow: rgba(0, 0, 0, 0.55);
    --env-texture-opacity: 0.03;

    /* Configuración visual */
    --seal-bg: #2d6a4f;
    --seal-inner: #1b4332;
    --seal-accent: #52b788;
    --seal-text: #d8e8d0;
}

/* Detalles de apariencia */
html {
    height: 100%;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.75;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100%;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Configuración visual */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.032;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* Elementos de la interfaz */
.font-caveat {
    font-family: 'Caveat', cursive !important;
}

.font-dancing {
    font-family: 'Dancing Script', cursive !important;
}

.font-shadows {
    font-family: 'Shadows Into Light', cursive !important;
}

.font-indie {
    font-family: 'Indie Flower', cursive !important;
}

.font-cormorant {
    font-family: 'Cormorant Garamond', serif !important;
}

.font-dmsans {
    font-family: 'DM Sans', sans-serif !important;
}

.font-sacramento {
    font-family: 'Sacramento', cursive !important;
    font-size: 1.4em;
}

/* Reglas de estilo global */

.size-small {
    font-size: 1.15rem !important;
    line-height: 1.6 !important;
}

.size-medium {
    font-size: 1.42rem !important;
    line-height: 1.95 !important;
}

.size-large {
    font-size: 1.75rem !important;
    line-height: 2.1 !important;
}

/* Configuración visual */
.state-screen {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    width: 100%;
}

.state-screen.hidden {
    display: none !important;
}

/* Reglas de estilo global */
#state-maintenance {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    background-color: var(--bg);
}

.maintenance-content {
    max-width: 450px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    animation: fadeUp 1s ease both;
}

.maint-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

#state-maintenance h1 {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 2.2rem;
    font-weight: 400;
    color: var(--text);
    margin: 0;
}

#state-maintenance p {
    font-family: var(--font-ui);
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-light);
    margin: 0;
    opacity: 0.8;
}

.maint-footer {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-ui);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-top: 1rem;
}

.maint-footer .dot {
    width: 3px;
    height: 3px;
    background: var(--gold);
    border-radius: 50%;
    opacity: 0.5;
}

/* Reglas de estilo global */
#state-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    min-height: 100vh;
}

.loading-emblem {
    width: 72px;
    height: 72px;
    opacity: 0.75;
}

.loading-ring {
    transform-origin: 30px 30px;
    animation: spin-slow 10s linear infinite;
}

.loading-label {
    font-family: var(--font-ui);
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-faint);
    animation: breathe 2.5s ease-in-out infinite;
}

@keyframes spin-slow {
    to {
        transform: rotate(360deg);
    }
}

@keyframes breathe {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

/* Reglas de estilo global */
#state-envelope {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    overflow: hidden;
}

.envelope-scene {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.envelope-hint {
    font-family: var(--font-ui);
    font-size: 0.62rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-faint);
    animation: float-hint 2.2s ease-in-out infinite;
    user-select: none;
}

@keyframes float-hint {

    0%,
    100% {
        opacity: 0.5;
        transform: translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateY(-4px);
    }
}

@keyframes float-envelope {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* Configuración visual */
.envelope-wrapper {
    cursor: pointer;
    position: relative;
    width: 420px;
    height: 280px;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    animation: float-envelope 4s ease-in-out infinite;
}

.envelope-wrapper:focus-visible .envelope-body {
    outline: 2px solid var(--gold);
    outline-offset: 4px;
}

/* Elementos de la interfaz */
.envelope-body {
    width: 100%;
    height: 100%;
    position: relative;
    background: var(--env-bg);
    background-image: url('https://www.transparenttextures.com/patterns/natural-paper.png');
    border: 1px solid var(--env-border);
    box-shadow:
        0 4px 20px var(--env-shadow),
        0 25px 70px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    transition: box-shadow 0.3s, transform 0.3s;

    /* Detalles de apariencia */
    [data-theme="midnight"] &,
    [data-theme="crimson"] &,
    [data-theme="obsidian"] & {
        background-image: none;
    }

    /* Reglas de estilo global */
    &::before {
        content: '';
        position: absolute;
        inset: 0;
        opacity: var(--env-texture-opacity);
        background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
        pointer-events: none;
    }
}

.envelope-wrapper:hover .envelope-body {
    transform: translateY(-4px) scale(1.01);
    box-shadow:
        0 8px 32px var(--shadow),
        0 32px 80px var(--shadow-deep);
}

/* Reglas de estilo global */
.env-folds {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;

    /* Elementos de la interfaz */
    &::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 0;
        height: 0;
        border-top: 140px solid transparent;
        border-bottom: 140px solid transparent;
        border-left: 160px solid var(--env-fold);
        filter: drop-shadow(4px 0 8px rgba(0, 0, 0, 0.08));
    }

    /* Detalles de apariencia */
    &::after {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 0;
        height: 0;
        border-top: 140px solid transparent;
        border-bottom: 140px solid transparent;
        border-right: 160px solid var(--env-fold);
        filter: drop-shadow(-4px 0 8px rgba(0, 0, 0, 0.08));
    }
}

.env-bottom-fold {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    border-left: 210px solid transparent;
    border-right: 210px solid transparent;
    border-bottom: 155px solid var(--env-fold-bottom);
    z-index: 4;
    filter: drop-shadow(0 -5px 12px rgba(0, 0, 0, 0.08));
}

/* Detalles de apariencia */
.env-letter-peek {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 78%;
    height: 80px;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 1.5rem;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 -2px 12px var(--shadow);
}

/* Detalles de apariencia */
.env-letter-lines {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.env-letter-lines span {
    display: block;
    height: 1px;
    background: var(--accent);
    opacity: 0.22;
    border-radius: 1px;
}

.env-letter-lines span:nth-child(1) {
    width: 100%;
}

.env-letter-lines span:nth-child(2) {
    width: 78%;
}

.env-letter-lines span:nth-child(3) {
    width: 55%;
}

/* Detalles de apariencia */
.env-flap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    transform-origin: top center;
    transition: transform 1.1s cubic-bezier(0.19, 1, 0.22, 1);

    /* Detalles de apariencia */
    height: 0;
    border-left: 210px solid transparent;
    border-right: 210px solid transparent;
    border-top: 120px solid var(--env-bg);

    /* Detalles de apariencia */
    filter: drop-shadow(0 2px 5px var(--env-shadow));
}

/* Detalles de apariencia */
.env-seal {
    position: absolute;
    /* Elementos de la interfaz */
    top: 84px;
    left: 50%;
    transform: translateX(-50%);
    width: 72px;
    height: 72px;
    z-index: 30;
    /* Detalles de apariencia */
    transition: opacity 0.6s, transform 0.6s ease-out;
}

/* Detalles de apariencia */
.env-recipient {
    position: absolute;
    /* Elementos de la interfaz */
    top: 168px;
    left: 50%;
    transform: translateX(-50%);
    width: 82%;
    background: var(--env-label-bg);
    border: 1px solid var(--env-border);
    box-shadow: 0 4px 12px var(--env-shadow);
    padding: 0.9rem 1rem;
    text-align: center;
    z-index: 20;
    /* Elementos de la interfaz */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    pointer-events: none;
    border-radius: 2px;
    /* Detalles de apariencia */
    background-image: repeating-linear-gradient(to bottom, transparent, transparent 32px, var(--env-border) 32px, var(--env-border) 33px);
}

.env-to-label {
    font-family: var(--font-ui);
    font-size: 0.65rem;
    letter-spacing: 0.45em;
    text-transform: uppercase;
    color: var(--text-light);
    background: var(--env-label-bg);
    padding: 0 8px;
    z-index: 1;
}

.env-to-name {
    font-family: var(--font-body);
    font-size: 2.6rem;
    color: var(--text);
    opacity: 0.95;
    line-height: 0.7;
    z-index: 1;
}

/* Elementos de la interfaz */
/* Configuración visual */
.envelope-wrapper.is-opening {
    animation: none !important;
    transform: translateY(15px) scale(1.03);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.envelope-wrapper.is-opening .env-flap {
    transform: perspective(600px) rotateX(-180deg);
    border-top-color: var(--env-flap-open);
}

.envelope-wrapper.is-opening .env-seal {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px) scale(0.6);
}

.envelope-wrapper.is-opening .env-letter-peek {
    transform: translateX(-50%) translateY(-100px);
    transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

.envelope-wrapper.is-opening .env-recipient {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
}

/* Detalles de apariencia */
.envelope-scene.is-exit {
    animation: env-exit 0.6s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes env-exit {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: scale(0.85) translateY(30px);
    }
}

@media (max-width: 400px) {
    .envelope-wrapper {
        width: 280px;
    }

    .env-fold-bottom {
        border-left-width: 140px;
        border-right-width: 140px;
        border-bottom-width: 100px;
    }

    .env-fold-left {
        border-bottom-width: 210px;
        border-right-width: 140px;
    }

    .env-fold-right {
        border-bottom-width: 210px;
        border-left-width: 140px;
    }

    .env-flap {
        border-left-width: 140px;
        border-right-width: 140px;
        border-top-width: 100px;
    }
}

/* Reglas de estilo global */
#state-letter {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

/* Detalles de apariencia */
.paper-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 70% 50% at 20% 10%, rgba(212, 165, 165, 0.07) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 85% 90%, rgba(201, 169, 110, 0.06) 0%, transparent 55%);
}

.letter-scroll {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--letter-max-width);
    padding: var(--letter-padding-v) 1.5rem;
    padding-bottom: 8rem;
    /* Configuración visual */
    margin: 0 auto;
    /* Reglas de estilo global */
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Detalles de apariencia */
.letter-paper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow:
        0 1px 3px var(--shadow),
        0 8px 32px var(--shadow),
        0 32px 80px rgba(0, 0, 0, 0.04);
    padding: var(--letter-padding-v) var(--letter-padding-h);
    position: relative;
    border-radius: 2px;
    overflow: visible;

    /* Elementos de la interfaz */
    &::before {
        content: '';
        position: absolute;
        inset: -4px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        z-index: -1;
        transform: rotate(-1deg);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    }

    &::after {
        content: '';
        position: absolute;
        inset: -2px;
        background: var(--bg-card2);
        border: 1px solid var(--border);
        z-index: -2;
        transform: rotate(0.6deg);
    }

    /* Reglas de estilo global */
    background-image: repeating-linear-gradient(var(--bg-card),
        var(--bg-card) 1.85rem,
        rgba(212, 165, 165, 0.035) 1.85rem,
        rgba(212, 165, 165, 0.035) 1.9rem);
    background-position: 0 5.5rem;

    /* Elementos de la interfaz */
    /* Elementos de la interfaz */
    [data-theme="midnight"] &,
    [data-theme="crimson"] &,
    [data-theme="obsidian"] & {

        &::before,
        &::after {
            display: none;
        }

        background-image: none !important;
        /* Reglas de estilo global */
        border: 1px solid rgba(255, 255, 255, 0.05);
        /* Reglas de estilo global */
        border-radius: 4px;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    }
}

/* Elementos de la interfaz */
.letter-paper.is-premium-paper {
    background-color: #fdfbf7 !important;
    /* Elementos de la interfaz */
    background-image:
        /* Elementos de la interfaz */
        repeating-linear-gradient(rgba(0, 0, 0, 0),
            rgba(0, 0, 0, 0) 1.85rem,
            rgba(60, 30, 20, 0.012) 1.85rem,
            rgba(60, 30, 20, 0.012) 1.9rem),
        /* Detalles de apariencia */
        url("https://www.transparenttextures.com/patterns/natural-paper.png") !important;
    background-blend-mode: multiply;
    background-size: 450px auto !important;
    /* Reglas de estilo global */
    border: none !important;
    /* Reglas de estilo global */

    /* Configuración visual */
    clip-path: polygon(0% 1%, 5% 0%, 10% 1.2%, 15% 0%, 20% 0.8%, 25% 0%, 30% 1%, 35% 0%, 40% 1.1%, 45% 0%, 50% 0.9%, 55% 0%, 60% 1.2%, 65% 0%, 70% 1%, 75% 0%, 80% 1.1%, 85% 0%, 90% 0.8%, 95% 0%, 100% 1.5%,
            99% 5%, 100% 10%, 98.5% 15%, 100% 20%, 99.2% 25%, 100% 30%, 98.8% 35%, 100% 40%, 99% 45%, 100% 50%, 98.6% 55%, 100% 60%, 99.1% 65%, 100% 70%, 98.7% 75%, 100% 80%, 99.2% 85%, 100% 90%, 98.9% 95%, 100% 99%,
            95% 100%, 90% 98.8%, 85% 100%, 80% 99.1%, 75% 100%, 70% 98.7%, 65% 100%, 60% 99.2%, 55% 100%, 50% 98.9%, 45% 100%, 40% 99.1%, 35% 100%, 30% 98.8%, 25% 100%, 20% 99%, 15% 100%, 10% 98.7%, 5% 100%, 0% 98.5%,
            1% 95%, 0% 90%, 1.2% 85%, 0% 80%, 0.8% 75%, 0% 70%, 1.1% 65%, 0% 60%, 0.9% 55%, 0% 50%, 1.2% 45%, 0% 40%, 1% 35%, 0% 30%, 1.1% 25%, 0% 20%, 0.8% 15%, 0% 10%, 1.5% 5%, 0% 0%);

    /* Configuración visual */
    box-shadow:
        0 12px 40px rgba(60, 30, 20, 0.1),
        0 2px 4px rgba(60, 30, 20, 0.05) !important;
}

/* Reglas de estilo global */
.is-premium-envelope .envelope-body {
    background-image: url("https://www.transparenttextures.com/patterns/natural-paper.png") !important;
    background-blend-mode: multiply;
}

/* Reglas de estilo global */
.is-premium-envelope .env-flap {
    border: none !important;
    width: 100%;
    height: 155px;
    background-color: var(--env-flap-open);
    background-image: url("https://www.transparenttextures.com/patterns/natural-paper.png") !important;
    background-blend-mode: multiply;
    /* Detalles de apariencia */
    clip-path: polygon(0% 0%, 100% 0%,
            95% 10%, 90% 20%, 85% 30.5%, 80% 40%, 75% 50.8%, 70% 60%, 65% 70.2%, 60% 80%, 55% 90.5%, 50% 100%,
            45% 90.8%, 40% 80%, 35% 70.5%, 30% 60%, 25% 50.2%, 20% 40%, 15% 30.8%, 10% 20%, 5% 10.5%, 0% 0%);
}

/* Configuración visual */
.is-premium-envelope .env-folds::before,
.is-premium-envelope .env-folds::after,
.is-premium-envelope .env-bottom-fold {
    background-image: url("https://www.transparenttextures.com/patterns/natural-paper.png");
    background-blend-mode: multiply;
    background-size: 200px 200px;
}

/* Elementos de la interfaz */
[data-theme="midnight"] .is-premium-envelope .envelope-body,
[data-theme="midnight"] .is-premium-envelope .env-flap,
[data-theme="crimson"] .is-premium-envelope .envelope-body,
[data-theme="crimson"] .is-premium-envelope .env-flap,
[data-theme="obsidian"] .is-premium-envelope .envelope-body,
[data-theme="obsidian"] .is-premium-envelope .env-flap {
    background-blend-mode: soft-light;
}

/* Configuración visual */
.letter-paper.is-premium-paper .letter-body p,
.letter-paper.is-premium-paper .letter-title,
.letter-paper.is-premium-paper .letter-to,
.letter-paper.is-premium-paper .letter-from {
    /* Reglas de estilo global */
    opacity: 1;
    filter: contrast(1.1);
    text-shadow: 0.3px 0.3px 0.5px rgba(0, 0, 0, 0.05);
}

/* Elementos de la interfaz */
[data-theme="midnight"] .letter-paper.is-premium-paper,
[data-theme="crimson"] .letter-paper.is-premium-paper,
[data-theme="obsidian"] .letter-paper.is-premium-paper {
    background-color: var(--bg-card) !important;
    background-image: url("https://www.transparenttextures.com/patterns/natural-paper.png") !important;
    background-blend-mode: soft-light !important;
    background-size: 500px auto !important;
    clip-path: none;
    /* Elementos de la interfaz */
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

/* Reglas de estilo global */

/* Reglas de estilo global */
.letter-paper {
    opacity: 0;
}

/* Reglas de estilo global */
.letter-paper.is-revealing {
    animation: paperRise 1.3s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes paperRise {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(40px);
        filter: blur(14px);
        box-shadow:
            0 1px 3px var(--shadow),
            0 8px 32px var(--shadow),
            0 0 0 rgba(212, 165, 165, 0);
    }

    40% {
        opacity: 0.7;
        filter: blur(4px);
    }

    70% {
        /* Configuración visual */
        box-shadow:
            0 1px 3px var(--shadow),
            0 8px 32px var(--shadow),
            0 0 60px var(--accent-soft);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
        box-shadow:
            0 1px 3px var(--shadow),
            0 8px 32px var(--shadow),
            0 32px 80px rgba(0, 0, 0, 0.04);
    }
}

/* Configuración visual */
.letter-tape {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%) rotate(-1deg);
    width: 100px;
    height: 32px;
    background: var(--tape-color);
    backdrop-filter: blur(1px);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    border: 1px solid var(--border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    z-index: 20;
}

/* Detalles de apariencia */
.letter-header {
    text-align: center;
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.ornament-top {
    width: 200px;
    max-width: 100%;
    opacity: 0;
    transform: scale(0.95);
    animation: ornamentFadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.2s;
}

.letter-title {
    font-family: var(--font-display);
    font-style: italic;
    font-size: clamp(2.8rem, 8vw, 3.4rem);
    font-weight: 400;
    color: var(--text);
    margin-top: 0.2rem;
    line-height: 1;
    position: relative;
    display: inline-block;
    text-align: center;
}

.letter-title-underline {
    width: 400px;
    max-width: 115%;
    margin-top: -1.25rem;
    margin-bottom: 0.5rem;
    opacity: 0;
    transform: translateY(5px);
    animation: ornamentFadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.4s;
}

.letter-title-underline svg path:not([d*="L"]) {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: drawOrnament 2.5s cubic-bezier(0.4, 0, 0.2, 1) forwards 0.6s;
}

.letter-title-underline svg path[d*="L"],
.letter-title-underline svg circle {
    opacity: 0;
    transform: scale(0);
    transform-origin: center;
    animation: popPoint 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* Detalles de apariencia */
.letter-title-underline svg path[d*="L"] {
    animation-delay: 1.3s;
    transform-origin: 200px 32px;
}

/* Reglas de estilo global */
.letter-title-underline svg circle:nth-child(3) {
    animation-delay: 1.5s;
}

/* Elementos de la interfaz */
.letter-title-underline svg circle:nth-child(4) {
    animation-delay: 1.5s;
}

/* Configuración visual */
.letter-title-underline svg circle:nth-child(6) {
    animation-delay: 1.7s;
}

/* Reglas de estilo global */
.letter-title-underline svg circle:nth-child(7) {
    animation-delay: 1.7s;
}

/* Reglas de estilo global */

@keyframes ornamentFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes drawOrnament {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes popPoint {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.letter-date {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-style: normal;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    text-transform: none;
    color: var(--text-light);
    margin-top: 0.45rem;
    opacity: 1;
}

/* Configuración visual */
.letter-salutation {
    margin-bottom: 1.75rem;
}

.letter-to {
    font-family: var(--font-signature);
    font-size: clamp(2.6rem, 7vw, 3.2rem);
    color: var(--text);
    line-height: 0.8;
    display: inline-block;
    opacity: 0.95;
    position: relative;
    margin-bottom: 2.2rem;
}

.letter-to::after,
.letter-to::before {
    content: '';
    position: absolute;
    left: 0;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
}

.letter-to::after {
    bottom: -6px;
    width: 100%;
    opacity: 0.45;
    transform: rotate(0.5deg);
}

.letter-to::before {
    bottom: -12px;
    width: 80%;
    opacity: 0.25;
    transform: rotate(-0.4deg);
}

/* Configuración visual */
.letter-body {
    font-family: var(--font-body);
    font-size: 1.42rem;
    font-weight: 400;
    /* Elementos de la interfaz */
    line-height: 1.95;
    color: var(--text);
    opacity: 0.85;
    /* Configuración visual */
}

.letter-body p {
    margin-bottom: 1.6rem;
}

.letter-body p:last-child {
    margin-bottom: 0;
}

/* Elementos de la interfaz */
.typewriter-cursor {
    display: inline-block;
    width: 2px;
    height: 1.05em;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: text-bottom;
    border-radius: 1px;
    animation: blink-cursor 0.85s step-end infinite;
}

@keyframes blink-cursor {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}



/* Reglas de estilo global */
.letter-footer {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.letter-closing-wrap {
    text-align: right;
    padding-right: 0.5rem;
}

.letter-from {
    font-family: var(--font-signature);
    font-size: clamp(2.2rem, 6vw, 2.8rem);
    color: var(--text);
    line-height: 1;
    display: inline-block;
    opacity: 0.82;
    position: relative;
}

.letter-from::after,
.letter-from::before {
    content: '';
    position: absolute;
    right: 0;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
}

.letter-from::after {
    bottom: -4px;
    width: 100%;
    opacity: 0.7;
    transform: rotate(-0.5deg);
}

.letter-from::before {
    bottom: -11px;
    width: 75%;
    opacity: 0.45;
    transform: rotate(0.6deg);
}

.footer-divider {
    width: 200px;
    margin: 0 auto;
    opacity: 0.55;
}



/* Reglas de estilo global */
#music-player-fab {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text);
    transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.3s ease;
    box-shadow: 0 4px 16px var(--shadow);
    cursor: pointer;
    opacity: 0;
}

#music-player-fab.visible {
    opacity: 1;
}

#music-player-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px var(--shadow-deep);
}

#music-fab-icon {
    font-size: 1rem;
    line-height: 1;
    transition: opacity 0.3s ease;
    display: inline-block;
}

@keyframes musicPulse {
    0% {
        transform: scale(1) rotate(-8deg);
    }

    50% {
        transform: scale(1.2) rotate(8deg);
    }

    100% {
        transform: scale(1) rotate(-8deg);
    }
}

#music-player-fab:not(.muted) #music-fab-icon {
    animation: musicPulse 1.5s infinite ease-in-out;
}

#music-player-fab.muted #music-fab-icon {
    opacity: 0.5;
    animation: none;
}

.music-slash {
    position: absolute;
    width: 18px;
    height: 2px;
    background: var(--text);
    transform: rotate(-45deg) scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
    transform-origin: center;
}

#music-player-fab.muted .music-slash {
    transform: rotate(-45deg) scaleX(1);
}

/* Configuración visual */
@media (max-width: 640px) {
    :root {
        --letter-padding-v: 2.5rem;
        --letter-padding-h: var(--letter-padding-h-mobile);
    }

    .letter-scroll {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        padding-top: 2.5rem;
        padding-bottom: 7rem;
    }

    .letter-paper::before {
        display: none;
    }



}

@media (max-width: 380px) {
    :root {
        --letter-padding-h-mobile: 1.25rem;
    }

    .letter-body {
        font-size: 1rem;
    }
}

/* Configuración visual */
.hidden {
    display: none !important;
}

/* Elementos de la interfaz */
#password-gate {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    /* Detalles de apariencia */
    background: color-mix(in srgb, var(--bg), transparent 30%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 20px;
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

#password-gate.hidden {
    display: none !important;
}

#password-gate .gate-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    padding: 45px 35px;
    border-radius: 45px;
    box-shadow: 0 40px 100px -20px var(--shadow-deep);
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
    overflow: hidden;
}

#password-gate .gate-card::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(212, 163, 115, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

#password-gate .gate-icon-box {
    width: 70px;
    height: 70px;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    color: var(--gold);
}

#password-gate .gate-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

#password-gate .gate-desc {
    font-family: var(--font-ui);
    font-size: 0.7rem;
    color: var(--text-light);
    letter-spacing: 0.05em;
    margin-bottom: 35px;
    line-height: 1.6;
}

#password-gate #gate-hint-container {
    margin-bottom: 35px;
    border-top: 1px solid #f9f4f0;
    padding-top: 25px;
}

#password-gate .hint-label {
    font-family: var(--font-ui);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--text-faint);
    margin-bottom: 6px;
    display: block;
}

#password-gate #gate-hint-text {
    font-family: var(--font-body);
    font-size: 1.45rem;
    color: var(--accent);
    line-height: 1.2;
}

#password-gate .gate-input-wrapper {
    position: relative;
    margin-bottom: 24px;
}

#password-gate input {
    width: 100%;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 18px 24px;
    text-align: center;
    font-family: var(--font-body);
    font-size: 1.4rem;
    color: var(--text);
    transition: all 0.3s ease;
    outline: none;
}

#password-gate input:focus {
    background: var(--bg-card);
    border-color: var(--gold);
    box-shadow: 0 10px 30px var(--shadow);
}

#password-gate input::placeholder {
    font-size: 0.9rem;
    color: #d8ced1;
    font-family: var(--font-ui);
    letter-spacing: 0.1em;
}

#password-gate #btn-gate-verify {
    width: 100%;
    background: var(--text);
    color: var(--bg-card);
    border: none;
    padding: 22px;
    border-radius: 28px;
    font-family: var(--font-ui);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.4em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 15px 35px var(--shadow);
}

#password-gate #btn-gate-verify:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.18);
}

#password-gate #btn-gate-verify:active {
    transform: translateY(0);
}

#password-gate #gate-error {
    margin-top: 18px;
    font-family: var(--font-ui);
    font-size: 0.65rem;
    color: #f28b82;
    font-weight: 700;
    letter-spacing: 0.05em;
}

@keyframes gateShake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.gate-shake {
    animation: gateShake 0.4s ease-in-out !important;
}