* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Roboto, sans-serif;
}

body {
    background-color: #f5f4f1;
    color: #333;
}

:root {
    --primary-color: #42A5F5;
    /* Soft blue for a gentle look */
    --secondary-color: #000000;
    /* Black for text and accents */
    --white: #FFFFFF;
    /* White for backgrounds */
    --text-dark: #000000;
    /* Black for text */
    --light-text: #FFFFFF;
    /* White for text on dark backgrounds */
    --gradient-start: #42A5F5;
    /* Soft blue for gradient */
    --gradient-end: #E3F2FD;
    /* Very light blue for gradient */
    --hover-color: #000000;
    /* Black for hover effects */
}

#header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background: #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 10;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-nav {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #1976D2;
    text-decoration: none;
}

.logo-nav img {
    height: 60px;
    margin-right: 10px;
    border-radius: 40px;
}

.menu a {
    margin: 0 25px;
    text-decoration: none;
    color: #666;
    font-size: 16px;
    transition: color 0.3s;
}

.menu a:hover {
    color: #1976D2;
}

.right-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.login-btn {
    background: transparent;
    border: 2px solid #1976D2;
    color: #1976D2;
    padding: 6px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s;
}

.login-btn:hover {
    background: #1976D2;
    color: white;
}

.donate-btn {
    background: #1976D2;
    color: white;
    padding: 8px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    transition: background 0.3s;
}

.donate-btn:hover {
    background: #1565C0;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 80px;
    /* Accounts for fixed header */
    overflow: hidden;
    text-align: center;
    color: var(--light-text);
    padding: 100px 20px;
    z-index: 1;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* Ensures video fills the section */
    transform: scale(1.1);
    /* Slight zoom for parallax effect */
    z-index: 1;
    animation: subtleZoom 20s ease-in-out infinite alternate;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background-color: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
    animation: fadeIn 1.2s ease-out;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    animation: fadeIn 1.4s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto 30px;
    opacity: 0.9;
    animation: fadeIn 1.6s ease-out 0.4s both;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 14px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1.8s ease-out 0.6s both;
}

.hero-cta:hover,
.hero-cta:focus {
    background-color: var(--hover-color);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.hero-cta:focus {
    outline: 3px solid var(--light-text);
    outline-offset: 4px;
}

/* Animations */
@keyframes subtleZoom {
    0% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1.15);
    }
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

/* Responsive adjustments for hero */
@media (max-width: 1024px) {
    .hero {
        min-height: 500px;
        padding: 80px 15px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 1.1rem;
    }

    .hero-cta {
        padding: 12px 30px;
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 450px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-cta {
        padding: 10px 25px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 400px;
        padding: 60px 10px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .hero-cta {
        padding: 8px 20px;
        font-size: 1rem;
    }
}

/* Filter buttons with checkbox hack */
.filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 30px 0;
}

.filters input {
    display: none;
}

.filter-btn {
    background-color: #FF6B00;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    display: inline-block;
}

.filter-btn:hover {
    background-color: #b73a27;
}

/* Active state for filter buttons */
#filter-all:checked~.filters label[for="filter-all"] .filter-btn,
#filter-education:checked~.filters label[for="filter-education"] .filter-btn,
#filter-health:checked~.filters label[for="filter-health"] .filter-btn,
#filter-housing:checked~.filters label[for="filter-housing"] .filter-btn {
    background-color: #333;
}

/* Story cards container */
.stories-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Filter functionality */
#filter-all:checked~.stories-container .story-card,
#filter-education:checked~.stories-container .education,
#filter-health:checked~.stories-container .health,
#filter-housing:checked~.stories-container .housing {
    display: block;
}

#filter-education:checked~.stories-container .story-card:not(.education),
#filter-health:checked~.stories-container .story-card:not(.health),
#filter-housing:checked~.stories-container .story-card:not(.housing) {
    display: none;
}

/* Pagination functionality */
#page-1:checked~.stories-container .page-1-content,
#page-2:checked~.stories-container .page-2-content {
    display: block;
}

#page-1:checked~.stories-container .page-2-content,
#page-2:checked~.stories-container .page-1-content {
    display: none;
}

#page-1:checked~.pagination label[for="page-1"] .page-btn,
#page-2:checked~.pagination label[for="page-2"] .page-btn {
    background-color: #d44630;
}

.story-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    width: 100%;
    max-width: 350px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
    position: relative;
}

.story-card:hover {
    transform: translateY(-6px);
}

.story-image {
    height: 200px;
    width: 100%;
    background-color: #ddd;
}

.story-content {
    padding: 20px;
}

.story-title {
    color: #1976D2;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.story-quote {
    font-style: italic;
    color: #666;
    padding-left: 10px;
    border-left: 3px solid #1976D2;
    margin-bottom: 15px;
}

.story-description {
    margin-bottom: 20px;
    line-height: 1.5;
}

/* Modal detail functionality */
.modal-trigger {
    display: none;
}

.detail-btn {
    background-color: #1976D2;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    display: inline-block;
}

.detail-btn:hover {
    background-color: #b73a27;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 100;
    overflow-y: auto;
}

.modal-content {
    background-color: white;
    width: 80%;
    max-width: 800px;
    margin: 50px auto;
    padding: 30px;
    border-radius: 10px;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #777;
}

.close-btn:hover {
    color: #d44630;
}

.modal-title {
    color: #d44630;
    font-size: 1.8rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

/* Image */
.modal-image {
    width: 100%;
    height: 300px;
    background-color: #eee;
    margin-bottom: 20px;
}

.story-card:nth-child(1) .story-image {
    background-image: url('../assets/anhtrang1.webp');
    background-size: cover;
    background-position: center;
}

.modal-1 .modal-image {
    background-image: url('../assets/anhtrang1.webp');
    background-size: cover;
    background-position: center;
}

.story-card:nth-child(2) .story-image {
    background-image: url('../assets/anhtrang1muc2.jpg');
    background-size: cover;
    background-position: center;
}

.modal-2 .modal-image {
    background-image: url('../assets/anhtrang1muc2.jpg');
    background-size: cover;
    background-position: center;
}

.story-card:nth-child(3) .story-image {
    background-image: url('../assets/anhtrang1muc3.jpg');
    background-size: cover;
    background-position: center;
}

.modal-3 .modal-image {
    background-image: url('../assets/anhtrang1muc3.jpg');
    background-size: cover;
    background-position: center;
}

.story-card:nth-child(4) .story-image {
    background-image: url('../assets/anhtrang2muc1.webp');
    background-size: cover;
    background-position: center;
}

.modal-4 .modal-image {
    background-image: url('../assets/anhtrang2muc1.webp');
    background-size: cover;
    background-position: center;
}

.story-card:nth-child(5) .story-image {
    background-image: url('../assets/anhtrang2muc2.jpg');
    background-size: cover;
    background-position: center;
}

.modal-5 .modal-image {
    background-image: url('../assets/anhtrang2muc2.jpg');
    background-size: cover;
    background-position: center;
}

.story-card:nth-child(6) .story-image {
    background-image: url('../assets/anhtrang2muc3.jpg');
    background-size: cover;
    background-position: center;
}

.modal-6 .modal-image {
    background-image: url('../assets/anhtrang2muc3.jpg');
    background-size: cover;
    background-position: center;
}

.modal-quote {
    font-style: italic;
    font-size: 1.2rem;
    color: #666;
    padding-left: 15px;
    border-left: 3px solid #d44630;
    margin-bottom: 20px;
}

.modal-text {
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Show modal when checkbox is checked */
#modal-1:checked~.modal-1,
#modal-2:checked~.modal-2,
#modal-3:checked~.modal-3,
#modal-4:checked~.modal-4,
#modal-5:checked~.modal-5,
#modal-6:checked~.modal-6 {
    display: block;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    margin: 30px 0;
    gap: 10px;
}

.page-btn {
    background-color: #333;
    color: white;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    border: none;
    cursor: pointer;
}

.page-btn:hover {
    background-color: #555;
}

/* Footer overrides */
.footer-container {
    margin-top: 60px !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

#footer {
    display: grid !important;
    grid-template-columns: 2fr 1fr 1fr !important;
    max-width: 1400px !important;
    margin: 0 auto !important;
    padding: 0 30px !important;
    gap: 40px !important;
}

.footer-container * {
    box-sizing: border-box !important;
}

@media (max-width: 1024px) {
    #footer {
        grid-template-columns: 1fr 1fr !important;
    }
}

@media (max-width: 768px) {
    #footer {
        grid-template-columns: 1fr !important;
    }
}

/* Hide hamburger menu by default (desktop/laptop) */
.hamburger {
    display: none;
}

/* Show hamburger only on mobile */
@media (max-width: 768px) {
    #header {
        flex-wrap: wrap;
        padding: 10px 15px;
    }

    .logo-container {
        flex: 1;
    }

    .menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #ffffff;
        position: absolute;
        top: 90px;
        left: 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .menu.active {
        display: flex;
    }

    .menu a {
        margin: 10px 0;
        text-align: center;
        padding: 10px 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .hamburger {
        display: block;
    }

    .right-section {
        margin-top: 10px;
    }
}