/* Shared envelope intro component (extracted from Glass). Driven by
   --color-primary + --gradient-primary + --color-text/-light + --font-heading/-body,
   set inline by the including template (see partials/envelope-intro.html.twig). */

.envelope-intro {
    position: fixed;
    inset: 0;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.envelope-intro.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.envelope-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.envelope-wrapper {
    position: relative;
    padding-bottom: 80px;
}

/* Letter container - overlaps with envelope and uses clip-path for opening illusion */
.letter-container {
    position: absolute;
    top: -210px;
    left: 0;
    width: 100%;
    height: 380px;
    overflow: hidden;
    z-index: 6;
    pointer-events: none;
    /* Clip path: full width above envelope, tapers to narrow opening inside envelope */
    clip-path: polygon(
        0% 0%,
        100% 0%,
        100% 55%,
        55% 90%,
        45% 90%,
        0% 55%
    );
}

.envelope {
    position: relative;
    width: min(450px, calc(100vw - 3rem)) !important;
    aspect-ratio: 450 / 330 !important;
    cursor: pointer;
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.4s ease;
    overflow: visible;
    z-index: 5;
}

/* Container that clips the letter while inside */
.envelope-inner {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.envelope:not(.open):hover {
    transform: none;
}

/* Envelope shadow */
.envelope-shadow {
    position: absolute;
    bottom: -30px;
    left: -5%;
    width: 110%;
    height: 80px;
    background-image: url('/templates/shared/envelope/img/umbra.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.5;
    transition: all 0.4s ease;
}

.envelope:not(.open):hover .envelope-shadow {
    bottom: -35px;
    opacity: 0.4;
}

/* Envelope back - main body */
.envelope-back {
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    border-radius: 4px;
    overflow: hidden;
}

.envelope-texture {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    pointer-events: none;
}

.envelope-back .envelope-texture {
    background-image:
        linear-gradient(135deg, rgba(0,0,0,0.06) 25%, transparent 25%),
        linear-gradient(225deg, rgba(0,0,0,0.06) 25%, transparent 25%),
        linear-gradient(45deg, rgba(0,0,0,0.06) 25%, transparent 25%),
        linear-gradient(315deg, rgba(0,0,0,0.06) 25%, transparent 25%);
    background-size: 24px 24px;
    background-position: 0 0, 12px 0, 12px -12px, 0 12px;
    opacity: 1;
}

/* Interior cover - only covers the sides, not the top opening */
.envelope-interior {
    position: absolute;
    top: 40%;
    left: 0;
    width: 100%;
    height: 60%;
    background: var(--color-primary);
    z-index: 2;
}

.envelope-interior .envelope-texture {
    background-image: url('/templates/shared/envelope/img/patern-decorativ.png');
}

.envelope-flap-top .envelope-texture {
    display: none;
}

.envelope-flaps-side .envelope-texture {
    background-image: url('/templates/shared/envelope/img/envelope-texture.png');
    clip-path: polygon(0 0, 0 100%, 42% 70%, 42% 50%, 0 0, 100% 0, 58% 50%, 58% 70%, 100% 100%, 100% 0);
}

.envelope-flap-bottom .envelope-texture {
    background-image: url('/templates/shared/envelope/img/envelope-texture-clapa-jos.png');
    clip-path: polygon(0 100%, 0 78%, 44% 10%, 56% 10%, 100% 78%, 100% 100%);
}

/* SVG flap styling */
.flap-main {
    fill: var(--color-primary);
}

.flap-shadow {
    fill: rgba(0,0,0,0.1);
}

.flap-inner {
    stroke: rgba(255,255,255,0.2);
}

/* Top flap - animated */
.envelope-flap-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 65%;
    transform-origin: top center;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 5;
    backface-visibility: visible;
    transform-style: preserve-3d;
}

.envelope-flap-top svg {
    width: 100%;
    height: 100%;
}


.envelope.open .envelope-flap-top {
    transform: rotateX(-180deg);
    z-index: 1;
}

.envelope:not(.open):hover .envelope-flap-top {
    transform: rotateX(30deg);
}

/* Side flaps */
.envelope-flaps-side {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

.envelope-flaps-side svg {
    width: 100%;
    height: 100%;
}

/* Bottom flap */
.envelope-flap-bottom {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 56%;
    z-index: 4;
}

.envelope-flap-bottom svg {
    width: 100%;
    height: 100%;
}

/* Letter/Card */
.letter {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) translateY(210px);
    width: 380px;
    height: 210px;
    background: linear-gradient(to bottom, #ffffff 0%, #fdfcfa 50%, #f8f6f3 100%);
    border-radius: 3px;
    box-shadow:
        0 2px 8px rgba(0,0,0,0.1),
        0 8px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Letter peek on envelope hover */
.envelope:not(.open):hover ~ .letter-container .letter {
    transform: translateX(-50%) translateY(80px);
}

.letter::before {
    content: '';
    position: absolute;
    inset: 10px;
    border: 1px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
    pointer-events: none;
}

.letter::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-primary) 30%, var(--color-primary) 70%, transparent);
}

.envelope.open ~ .letter-container .letter {
    transform: translateX(-50%) translateY(-100px);
}

.letter-content {
    width: 100%;
    padding: 1.5rem;
    box-sizing: border-box;
    text-align: center;
}

.letter-subtitle {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.letter-names {
    font-family: var(--font-heading);
    font-size: 2.1rem;
    color: var(--color-text);
    margin-bottom: 0.35rem;
    line-height: 1.15;
}

.letter-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0.5rem 0;
}

.letter-divider span {
    width: 40px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.letter-divider i {
    color: var(--color-primary);
    font-size: 0.6rem;
}

.letter-date {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 2px;
    color: var(--color-text);
}

/* Wax seal - now outside envelope for z-index control */
.envelope-seal {
    position: absolute;
    top: 125px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 8;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.seal-inner {
    width: 55px;
    height: 55px;
    background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 0%, transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(0,0,0,0.2) 0%, transparent 40%),
        linear-gradient(145deg,
            color-mix(in srgb, var(--color-primary) 70%, white) 0%,
            var(--color-primary) 50%,
            color-mix(in srgb, var(--color-primary) 70%, black) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 3px 8px rgba(0,0,0,0.3),
        0 6px 20px rgba(0,0,0,0.2),
        inset 0 2px 4px rgba(255,255,255,0.3),
        inset 0 -2px 4px rgba(0,0,0,0.2);
    border: 2px solid rgba(255,255,255,0.15);
}

.seal-inner i {
    color: rgba(255,255,255,0.9);
    font-size: 1.3rem;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.envelope.open ~ .envelope-seal {
    opacity: 0;
    transform: translateX(-50%) scale(0.5) rotate(45deg);
}

.envelope:not(.open):hover ~ .envelope-seal {
    transform: translateX(-50%) translateY(-5px);
}

/* Hint text */
.envelope-hint {
    position: absolute;
    bottom: 9%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    white-space: nowrap;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--color-text-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: pulse-hint 2s ease-in-out infinite;
    transition: opacity 0.5s ease;
}

.envelope-hint.hidden {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    animation: none;
}

@keyframes pulse-hint {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Continue button */
.envelope-continue {
    position: absolute;
    bottom: 9%;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2.5rem;
    background: rgba(255, 255, 255, 0.92);
    color: var(--color-text);
    border: 2px solid var(--color-primary);
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: none;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.5s ease;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

.envelope-continue.visible {
    opacity: 1;
    transform: translateX(-50%);
}

.envelope-continue:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateX(-50%) translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* Responsive */
@media (max-width: 500px) {
    .envelope-intro {
        padding: 1.5rem;
    }

    .envelope-wrapper {
        transform: scale(0.75);
    }

    .envelope {
        width: 300px;
        height: 220px;
    }

    .letter-container {
        top: -185px;
        height: 300px;
        z-index: 6;
        clip-path: polygon(
            0% 0%,
            100% 0%,
            100% 62%,
            55% 90%,
            45% 90%,
            0% 62%
        );
        -webkit-clip-path: polygon(
            0% 0%,
            100% 0%,
            100% 62%,
            55% 90%,
            45% 90%,
            0% 62%
        );
        will-change: clip-path;
    }

    .letter {
        width: 255px;
        height: 185px;
        transform: translateX(-50%) translateY(185px);
        will-change: transform;
        -webkit-transform: translateX(-50%) translateY(185px);
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }

    .envelope:not(.open):hover ~ .letter-container .letter {
        transform: translateX(-50%) translateY(85px);
    }

    .envelope.open ~ .letter-container .letter {
        transform: translateX(-50%) translateY(-45px);
    }

    .envelope-seal {
        top: 85px;
    }

    .letter-names {
        font-size: 1.8rem;
    }

    .letter-content {
        padding: 1.2rem 0.8rem;
    }

    .letter-subtitle {
        font-size: 0.7rem;
    }

    .letter-date {
        font-size: 0.9rem;
    }

    .seal-inner {
        width: 42px;
        height: 42px;
    }

    .seal-inner i {
        font-size: 1rem;
    }
}