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

:root {
    --pink-light: #fff0f8;
    --pink-mid: #f4c0d1;
    --pink-strong: #f472b6;
    --pink-deep: #c0446a;
    --pink-dark: #7a3050;
    --pink-text: #a05070;
}

body {
    font-family: 'Nunito', sans-serif;
    background: #fff5fb;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== HERO ===== */
.hero {
    background: linear-gradient(135deg, #ffe0f0 0%, #fff5fb 50%, #ffe8f8 100%);
    text-align: center;
    padding: 4rem 2rem 2.5rem;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--pink-mid);
}

.hero-hearts {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-heart {
    position: absolute;
    animation: floatUp 6s ease-in infinite;
    opacity: 0;
    user-select: none;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) scale(0.8) rotate(-10deg);
        opacity: 0.8;
    }

    100% {
        transform: translateY(-350px) scale(1.3) rotate(10deg);
        opacity: 0;
    }
}

.hero h1 {
    font-family: 'Pacifico', cursive;
    font-size: clamp(2rem, 6vw, 3.2rem);
    color: var(--pink-deep);
    margin-bottom: 0.5rem;
    text-shadow: 2px 4px 16px #f472b630;
    position: relative;
    z-index: 1;
}

.hero .subtitle {
    color: var(--pink-text);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.heart-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 2px solid var(--pink-mid);
    border-radius: 999px;
    padding: 0.5rem 1.4rem;
    font-size: 1rem;
    color: var(--pink-deep);
    font-weight: 800;
    font-family: 'Nunito', sans-serif;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 2px 12px #f4a0c030;
    position: relative;
    z-index: 1;
}

.heart-btn:hover {
    transform: scale(1.07);
    box-shadow: 0 4px 20px #f472b640;
}

.beat {
    display: inline-block;
    animation: beat 1.2s ease infinite;
}

@keyframes beat {

    0%,
    100% {
        transform: scale(1);
    }

    30% {
        transform: scale(1.4);
    }

    60% {
        transform: scale(1);
    }
}

/* ===== NAV ===== */
.nav {
    display: flex;
    background: white;
    border-bottom: 1px solid var(--pink-mid);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px #f4a0c020;
}

.nav-tab {
    flex: 1;
    padding: 0.85rem 0.5rem;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--pink-text);
    cursor: pointer;
    border: none;
    background: transparent;
    font-family: 'Nunito', sans-serif;
    transition: background 0.2s, color 0.2s;
    border-bottom: 3px solid transparent;
}

.nav-tab.active {
    color: var(--pink-deep);
    border-bottom-color: var(--pink-deep);
    background: #fff5fb;
}

.nav-tab:hover:not(.active) {
    background: #fff0f8;
}

/* ===== SECTIONS ===== */
.section {
    display: none;
    padding: 2rem 1.5rem;
    max-width: 700px;
    margin: 0 auto;
    min-height: 60vh;
}

.section.active {
    display: block;
    animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* ===== CARTA ===== */
.carta {
    background: #fff8fb;
    border: 1.5px dashed var(--pink-strong);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    box-shadow: 0 4px 32px #f4a0c020;
}

.carta-sticker {
    position: absolute;
    top: -16px;
    right: 20px;
    font-size: 2rem;
    animation: wiggle 2.5s ease-in-out infinite;
}

@keyframes wiggle {

    0%,
    100% {
        transform: rotate(-10deg);
    }

    50% {
        transform: rotate(10deg);
    }
}

.carta-envelope {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: transform 0.3s;
    display: block;
}

.carta-envelope:hover {
    transform: scale(1.2) rotate(-8deg);
}

.carta-text {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--pink-dark);
    text-align: center;
}

.carta-text .destaque {
    font-family: 'Pacifico', cursive;
    font-size: 1.2rem;
    color: var(--pink-deep);
    display: block;
    margin: 0.5rem 0;
}

.carta-sign {
    text-align: right;
    margin-top: 1.5rem;
    font-style: italic;
    color: var(--pink-text);
    font-size: 0.9rem;
}

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    padding-left: 2.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(to bottom, var(--pink-mid), var(--pink-deep), var(--pink-mid));
    border-radius: 2px;
}

.tl-item {
    position: relative;
    margin-bottom: 1.25rem;
    background: white;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    border: 0.5px solid var(--pink-mid);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.tl-item:hover {
    transform: translateX(6px);
    box-shadow: 0 4px 20px #f4a0c030;
}

.tl-dot {
    position: absolute;
    left: -26px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: white;
    border: 3px solid var(--pink-deep);
    border-radius: 50%;
}

.tl-emoji {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.tl-date {
    font-size: 0.72rem;
    color: var(--pink-deep);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.tl-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--pink-dark);
    margin: 2px 0;
}

.tl-desc {
    font-size: 0.87rem;
    color: var(--pink-text);
}

/* ===== GALERIA ===== */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.photo-card {
    border-radius: 12px;
    border: 2px solid var(--pink-mid);
    background: #fff0f8;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.photo-card:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 24px #f472b640;
    border-color: var(--pink-strong);
}

.photo-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    font-size: 0.68rem;
    color: #fff;
    font-weight: 700;
    text-align: center;
    padding: 6px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
}

/* ===== SURPRESA ===== */
.surpresa-wrap {
    text-align: center;
}

.razao-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 1rem;
}

.razao-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    border: 0.5px solid var(--pink-mid);
    border-radius: 10px;
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
    color: var(--pink-dark);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    text-align: left;
    font-family: 'Nunito', sans-serif;
}

.razao-item:hover {
    background: #fff0f8;
}

.razao-item.checked {
    background: #ffdcee;
    border-color: var(--pink-strong);
}

.razao-check {
    font-size: 1.1rem;
    min-width: 24px;
}

.surpresa-btn {
    background: linear-gradient(135deg, var(--pink-strong), var(--pink-deep));
    color: white;
    border: none;
    border-radius: 999px;
    padding: 0.8rem 2.2rem;
    font-size: 1.05rem;
    font-weight: 800;
    font-family: 'Nunito', sans-serif;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px #f472b650;
    margin-top: 1.5rem;
}

.surpresa-btn:hover {
    transform: scale(1.07);
    box-shadow: 0 8px 32px #f472b660;
}

.surpresa-msg {
    display: none;
    margin-top: 2rem;
    animation: popIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.surpresa-msg.show {
    display: block;
}

@keyframes popIn {
    0% {
        transform: scale(0.4);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.surpresa-msg .big-emoji {
    font-size: 4rem;
}

.surpresa-msg p {
    color: var(--pink-deep);
    font-weight: 800;
    font-size: 1.2rem;
    margin-top: 0.75rem;
    line-height: 1.6;
}

/* confetti */
.confetti-piece {
    position: fixed;
    width: 9px;
    height: 9px;
    border-radius: 2px;
    pointer-events: none;
    z-index: 9999;
    animation: confettiFall linear forwards;
}

@keyframes confettiFall {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(110vh) rotate(900deg);
        opacity: 0;
    }
}

/* rodapé */
footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.85rem;
    color: var(--pink-text);
    border-top: 1px solid var(--pink-mid);
    background: white;
}

footer span {
    color: var(--pink-deep);
    font-weight: 800;
}