html {
    scroll-behavior: smooth;
}

/* =========================
   COLOR SYSTEM
========================= */

:root {
    --primary-color: pink;
    --secondary-color: lightblue;
    --background-color: rgb(246, 216, 226);

    --text-color: whitesmoke;
    --heading-color: white;

    --accent-color: orange;
    --surprise-color: deeppink;

    --hover-color: royalblue;
    --disco-color: gold;

    --shadow-color: rgba(0, 0, 0, 0.2);
}


/* =========================
   PAGE
========================= */

body {
    background-color: var(--background-color);
    text-align: center;
}


/* =========================
   NAVIGATION
========================= */

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;

    background-color: var(--primary-color);

    padding: 15px 30px;

    border-bottom: 5px solid var(--secondary-color);
}

.logo {
    font-size: 50px;
    font-weight: bold;
    color: purple;
    font-family: 'victor', sans-serif;
}

.nav-links {
    display: flex;
    gap: 25px;

    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: purple;
    text-decoration: none;

    font-size: 18px;
    font-weight: bold;
}

.nav-links a:hover {
    color: orange;
}


/* =========================
   GENERAL TEXT
========================= */

h1 {
    color: purple;

    font-family: 'jetbrains mono', sans-serif;
    font-size: 60px;

    background-color: var(--primary-color);

    padding: 20px;

    border: 10px var(--secondary-color) solid;

    margin: 20px auto;

    width: 70%;

    border-radius: 20px;

    text-align: center;
}

h2 {
    color: whitesmoke;
    font-size: 32px;

    margin-top: 0;
    margin-bottom: 15px;
}

p {
    color: whitesmoke;
    font-size: 20px;
}


/* =========================
   HERO
========================= */

.hero {
    display: flex;

    align-items: center;
    justify-content: center;

    gap: 60px;

    width: 80%;
    max-width: 1200px;

    margin: 40px auto;
    padding: 40px;

    background-color: var(--primary-color);

    border-radius: 30px;

    box-shadow: 0 15px 35px var(--shadow-color);

    flex-direction: column;
}

.hero-content {
    flex: 1;
    text-align: center;
}

.hero-content h1 {
    width: auto;

    margin: 0 0 20px 0;
    padding: 0;

    border: none;

    background-color: transparent;

    font-size: 55px;
}

.hero img {
    width: 45%;
    max-width: 500px;

    height: auto;

    border-radius: 30px;

    object-fit: cover;
}


/* =========================
   IMAGES
========================= */

img {
    height: auto;
    border-radius: 40px;
}


/* =========================
   CARDS
========================= */

.birthday-card {
    width: auto;
    max-width: none;

    margin: 0;
    padding: 30px;

    background-color: var(--primary-color);

    border-radius: 20px;

    box-shadow: 0 10px 25px var(--shadow-color);

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}

.birthday-card:hover {
    transform: translateY(-10px);

    box-shadow:
        0 15px 30px rgba(0, 0, 0, 0.25);
}

#memories {
    background-color: pink;
}

#birthdaywishes {
    background-color: lightblue;
}

#specialMessage {
    background-color: plum;
}

#Family {
    background-color: gold;
}

.card-memory-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 20px 0;
}

.card-memory-grid img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 12px;
}

/* =========================
   BIRTHDAY GRID
========================= */

.birthday-grid {
    display: grid;

    grid-template-columns: repeat(2, 1fr);

    gap: 30px;
}


/* =========================
   BUTTONS
========================= */

button {
    font-size: 20px;

    padding: 10px 20px;

    margin: 20px;

    border: 10px solid var(--secondary-color);

    border-radius: 10px;

    background-color: var(--primary-color);

    cursor: pointer;

    transition:
        transform 0.3s ease,
        background-color 0.3s ease;
}

button:hover {
    background-color: var(--hover-color);

    transform: scale(1.5);
}


/* =========================
   BIRTHDAY MESSAGES
========================= */

#surpriseMessage {
    color: deeppink;

    font-size: 45px;
    font-weight: bold;

    opacity: 0;

    transition:
        transform 1.5s ease,
        color 1.5s ease,
        opacity 1.5s ease;
}

#greetingMessage {
    color: orange;

    font-size: 45px;
    font-weight: bold;

    opacity: 1;

    transition:
        transform 1.5s ease,
        color 1.5s ease,
        opacity 1.5s ease;
}

.specialMessage {
    color: var(--disco-color);

    font-size: 45px;
    font-weight: bold;

    opacity: 0;

    transition:
        transform 1.5s ease,
        color 1.5s ease,
        opacity 1.5s ease;
}

/* =========================
       FEATURE SECTION
    ========================= */
    .feature-section {
    width: 90%;
    max-width: 1200px;

    margin: 60px auto;
    padding: 50px 30px;

    background-color: var(--primary-color);

    border-radius: 30px;

    box-shadow: 0 15px 35px var(--shadow-color);
}
.section-heading {
    text-align: center;

    margin-bottom: 40px;
}.feature-grid {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 25px;
}
.feature-card {
    background-color: var(--secondary-color);
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 10px 25px var(--shadow-color);
    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
}
.feature-card.selected {
    transform: scale(1.05);

    box-shadow:
        0 15px 35px var(--shadow-color);
}
.feature-details {
    margin-top: 30px;

    padding: 30px;

    background-color: rgb(192, 192, 240);

    border-radius: 20px;

    box-shadow: 0 10px 25px var(--shadow-color);
}

.feature-details h3 {
    font-size: 30px;

    margin-bottom: 10px;
}
/* =========================
   RESET BUTTON
========================= */

#resetButton {
    font-size: 20px;

    padding: 10px 20px;

    margin: 20px;

    border: 10px solid var(--secondary-color);

    border-radius: 10px;

    background-color: var(--primary-color);

    cursor: pointer;

    transition:
        transform 0.3s ease,
        background-color 0.3s ease;
}

#resetButton:hover {
    background-color: var(--hover-color);

    transform: scale(1.5);
}


/* =========================
   DISCO ANIMATION
========================= */

.disco {
    animation: discocolors 1s infinite;
}

@keyframes discocolors {

    0% {
        background-color: var(--primary-color);
    }

    25% {
        background-color: var(--secondary-color);
    }

    50% {
        background-color: var(--disco-color);
    }

    75% {
        background-color: var(--hover-color);
    }

    100% {
        background-color: var(--primary-color);
    }
}

/* =========================
   PHOTO LIGHTBOX
========================= */

.lightbox {
    position: fixed;

    top: 0;
    left: 0;

    width: 100%;
    height: 100%;

    background-color: rgba(0, 0, 0, 0.85);

    display: none;

    justify-content: center;
    align-items: center;

    z-index: 1000;

    padding: 20px;

    box-sizing: border-box;
}

.lightbox img {
    max-width: 90%;
    max-height: 85%;

    width: auto;
    height: auto;

    object-fit: contain;

    border-radius: 15px;

    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;

    top: 20px;
    right: 30px;

    margin: 0;

    padding: 5px 15px;

    border: none;

    background-color: transparent;

    color: white;

    font-size: 50px;

    cursor: pointer;

    z-index: 1001;
}

.lightbox-close:hover {
    background-color: transparent;

    transform: scale(1.1);
}
.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
    padding: 10px 18px;
    border: none;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 35px;
    cursor: pointer;
    z-index: 10;
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

/* =========================
   MOBILE
========================= */

@media (max-width: 600px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    .menu-toggle {
    display: block;
}
    .menu-toggle {
    display: none;
    font-size: 30px;
    padding: 5px 12px;
    margin: 0;
    border: none;
    background-color: transparent;
    color: whitesmoke;
    cursor: pointer;
    transition: transform 0.6s ease, background-color 0.6s ease;
}
    .menu-toggle:hover {
    transform: scale(1.1);
}

    .nav-links {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}

    h1 {
        font-size: 45px;
        width: 85%;
    }

    /* Hero becomes vertical */
    .hero {
        flex-direction: column;
        width: 80%;
        padding: 30px;
    }

    .hero img {
        width: 100%;
    }

    .hero-content h1 {
        font-size: 40px;
    }

    /* Cards become one column */
    .birthday-grid {
        grid-template-columns: 1fr;
    }

    section {
        width: auto;
        margin: 20px auto;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* =========================
   PHOTO GALLERY
========================= */

.photo-section {
    width: 85%;
    max-width: 1000px;

    margin: 50px auto;
    padding: 30px;

    background-color: hotpink;

    border-radius: 25px;

    box-shadow: 0 10px 25px var(--shadow-color);
}

.photo-grid {
    display: grid;

    grid-template-columns: repeat(4, 1fr);

    gap: 12px;

    align-items: start;
}

.photo-grid img {
    display: block;

    width: 100%;
    height: auto;

    border-radius: 12px;

    box-shadow: 0 5px 15px var(--shadow-color);

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}

.photo-grid img:hover {
    transform: scale(1.03);

    box-shadow:
        0 10px 20px rgba(0, 0, 0, 0.3);
}

/* =========================
   GUESTBOOK
========================= */

.guestbook-section {
    width: 85%;
    max-width: 800px;
    margin: 60px auto;
    padding: 40px 30px;
    background-color: plum;
    border-radius: 30px;
    box-shadow: 0 15px 35px var(--shadow-color);
}

.guestbook-section .section-heading {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 15px;
    border: 2px solid var(--secondary-color);
    border-radius: 12px;
    font-size: 17px;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.guestbook-button {
    border: none;
    margin: 10px 0;
    background-color: var(--primary-color);
    color: whitesmoke;
    font-weight: bold;
}

.guestbook-button:hover {
    background-color: var(--hover-color);
}

#guestbookStatus {
    color: var(--primary-color);
    font-weight: bold;
    margin-top: 20px;
}
.approved-messages-section {
    width: 85%;
    max-width: 800px;
    margin: 60px auto;
    padding: 40px 30px;
    background-color: rgb(118, 216, 229);
    border-radius: 30px;
    box-shadow: 0 15px 35px var(--shadow-color);
}

.approved-message-card {
    padding: 25px;
    margin-bottom: 20px;
    background-color: plum;
    border-radius: 20px;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.approved-message-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.approved-message-card p {
    font-size: 18px;
    line-height: 1.6;
}
.message-carousel {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

#approvedMessages {
    flex: 1;
    max-width: 600px;
}

.carousel-button {
    width: 50px;
    height: 50px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    font-size: 28px;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.carousel-button:hover {
    transform: scale(1.1);
    background-color: var(--hover-color);
}

.approved-message-card {
    padding: 25px;
    background-color: plum;
    border-radius: 20px;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.approved-message-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.approved-message-card p {
    font-size: 18px;
    line-height: 1.6;
}