@import url('https://fonts.googleapis.com/css2?family=poppins:wght@300;400;500;600&display=swap');


:root {
    --bg-base: #fff0f3;
    --text-main: #2b2b2b;
    --text-muted: #555555;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.8);
    --primary: #ff2a5f;
    --primary-glow: rgba(255, 42, 95, 0.4);
    --shadow-soft: 0 8px 32px 0 rgba(255, 42, 95, 0.15);
    
   
    --gradient-1: #ffccd5;
    --gradient-2: #ffb3c6;
}

body.dark-mode {
    --bg-base: #0a0a0f;
    --text-main: #ffffff;
    --text-muted: #b0b0b0;
    --glass-bg: rgba(20, 20, 25, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --primary: #ff4b72;
    --primary-glow: rgba(255, 75, 114, 0.5);
    --shadow-soft: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
    
   
    --gradient-1: #1a0b12;
    --gradient-2: #0f0508;
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-transform: lowercase; 
    -webkit-font-smoothing: antialiased;
}


::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }


::selection { background: var(--primary); color: #fff; }

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: 'poppins', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.8s ease, color 0.8s ease;
    
   
    background: linear-gradient(45deg, var(--gradient-1), var(--gradient-2), var(--bg-base));
    background-size: 400% 400%;
    animation: gradientBreathing 15s ease infinite;
}

@keyframes gradientBreathing {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}


body.pagina-gif::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('img/fundo.gif');
    background-size: cover;
    background-position: center;
    z-index: -1;
    opacity: 0;
    mix-blend-mode: overlay;
    animation: fadeInGif 2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes fadeInGif {
    to { opacity: 0.7; transform: scale(1.02); }
}


#pagina1, #pagina2 {
    display: none;
    padding-top: 6rem;
}


.active-page {
    display: block !important;
    animation: pageReveal 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageReveal {
    0% { opacity: 0; transform: translateY(40px) scale(0.97) rotateX(-5deg); filter: blur(10px); }
    100% { opacity: 1; transform: translateY(0) scale(1) rotateX(0deg); filter: blur(0); }
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem 5rem 2rem;
    perspective: 1000px; 
}


.top-controls {
    position: fixed;
    top: 0; left: 0; width: 100%;
    display: flex; justify-content: space-between;
    padding: 1.5rem 3rem;
    z-index: 1000;
    pointer-events: none;
}

.theme-btn, .back-btn {
    pointer-events: auto;
    background: var(--glass-bg);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 12px 28px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.theme-btn:hover, .back-btn:hover {
    transform: translateY(-5px);
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 15px 30px var(--primary-glow);
}

.back-btn { display: none; align-items: center; gap: 10px; }
.back-btn:hover span { transform: translateX(-5px); transition: 0.3s; }


h1, h2, h3 { color: var(--primary); text-align: center; font-weight: 600; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -1px; margin-bottom: 0.5rem; }
.hero p { text-align: center; font-size: 1.2rem; color: var(--text-muted); margin-bottom: 4rem; }


.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 5rem;
}

.card {
    position: relative;
    height: 380px;
    border-radius: 24px;
    overflow: hidden;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
   
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.6s ease;
    transform-style: preserve-3d;
}

.card img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 1s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.6s ease;
    filter: brightness(0.9) grayscale(20%);
}

.card:hover {
    transform: translateY(-15px) rotateX(5deg) rotateY(-5deg);
    box-shadow: -20px 20px 40px var(--primary-glow);
    z-index: 10;
}

.card:hover img {
    transform: scale(1.1) translateZ(20px);
    filter: brightness(1.1) grayscale(0%);
}

.overlay {
    position: absolute;
    bottom: -100px; left: 0; width: 100%; height: 50%;
    background: linear-gradient(to top, rgba(255, 42, 95, 0.95), transparent);
    color: #fff;
    display: flex; align-items: flex-end; justify-content: center;
    padding: 2rem 1.5rem;
    font-size: 1.2rem; font-weight: 500;
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.card:hover .overlay {
    bottom: 0; opacity: 1;
}


.message, .gif-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 4rem 3rem;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin-bottom: 5rem;
    transition: all 0.5s ease;
}

.message:hover, .gif-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 25px 50px var(--primary-glow);
    border-color: var(--primary);
}

.love-text, .text-area { font-size: 1.2rem; line-height: 1.9; color: var(--text-main); text-align: center; }


.interactive { text-align: center; margin-bottom: 3rem; }

.glow-on-hover {
    padding: 20px 50px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(90deg, var(--primary), #ff758f, var(--primary));
    background-size: 200% auto;
    color: #fff;
    font-size: 1.3rem;
    font-weight: 600;
    font-family: 'poppins', sans-serif;
    cursor: pointer;
    box-shadow: 0 10px 30px var(--primary-glow);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    animation: gradientFlow 3s linear infinite;
    position: relative;
    overflow: hidden;
}

@keyframes gradientFlow {
    to { background-position: 200% center; }
}

.glow-on-hover::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: all 0.6s ease;
}

.glow-on-hover:hover {
    transform: scale(1.08) translateY(-5px);
    box-shadow: 0 20px 50px var(--primary-glow);
    letter-spacing: 2px;
}

.glow-on-hover:hover::before {
    left: 100%; 
}


.photo-area h3 { margin-bottom: 2rem; }

.photo-frame {
    max-width: 450px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    background: var(--glass-bg);
    padding: 15px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.photo-frame img {
    width: 100%;
    border-radius: 12px;
    display: block;
    transition: transform 0.6s ease;
}

.photo-frame:hover {
    transform: scale(1.05) rotate(4deg) translateY(-10px);
    box-shadow: 0 30px 60px var(--primary-glow);
    border-color: var(--primary);
}

.photo-frame:hover img {
    transform: scale(1.05);
}


.floating { animation: float 6s ease-in-out infinite; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.pulse-container { animation: pulse 3s ease-in-out infinite; }
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}