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

:root {
    --fire-red: #C41E3A;
    --dark-gray: #2B2B2B;
    --medium-gray: #4A4A4A;
    --light-gray: #E5E5E5;
    --white: #FFFFFF;
    --red-hover: #A01829;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(196, 30, 58, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    color: var(--dark-gray);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #1a1a1a 100%);
    color: var(--white);
    padding: 0.75rem 0;
    box-shadow: 0 2px 8px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.header-brand {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    flex-wrap: wrap;
}

header h1 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header .subtitle {
    font-size: 0.8rem;
    color: var(--light-gray);
    font-weight: 400;
    margin: 0;
    opacity: 0.8;
}

nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

nav a {
    color: var(--white);
    text-decoration: none;
    padding: 0.4rem 0.9rem;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

nav a.active {
    background: var(--fire-red);
    border-color: var(--fire-red);
}

/* Main Content */
main {
    flex: 1;
    padding: 1.25rem 0 2rem 0;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 1.75rem;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.page-header p {
    color: var(--medium-gray);
    font-size: 1rem;
}

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tag-filter {
    padding: 0.6rem 1rem;
    border: 2px solid var(--light-gray);
    background: var(--white);
    color: var(--medium-gray);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.tag-filter:hover {
    border-color: var(--fire-red);
    color: var(--fire-red);
    transform: translateY(-2px);
}

.tag-filter.active {
    background: var(--fire-red);
    color: var(--white);
    border-color: var(--fire-red);
}

.refresh-btn {
    padding: 0.6rem 1.25rem;
    background: var(--fire-red);
    color: var(--white);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.refresh-btn:hover {
    background: var(--red-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.refresh-btn svg {
    transition: transform 0.6s ease;
}

.refresh-btn:active svg {
    transform: rotate(360deg);
}

/* Loading & Error States */
.loading, .error, .no-results {
    text-align: center;
    padding: 3rem 1rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--fire-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading p, .error p, .no-results p {
    color: var(--medium-gray);
    font-size: 1rem;
}

.error {
    color: var(--fire-red);
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.news-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-hover);
    border-color: var(--fire-red);
}

.news-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.news-meta {
    flex: 1;
}

.news-source {
    font-size: 0.85rem;
    color: var(--fire-red);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.news-date {
    font-size: 0.8rem;
    color: var(--medium-gray);
}

.copy-btn {
    padding: 0.5rem 0.75rem;
    background: var(--light-gray);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--dark-gray);
    transition: all 0.3s ease;
    white-space: nowrap;
    font-family: 'Inter', sans-serif;
}

.copy-btn:hover {
    background: var(--fire-red);
    color: var(--white);
}

.copy-btn.copied {
    background: #28a745;
    color: var(--white);
}

.news-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.news-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-title a:hover {
    color: var(--fire-red);
}

.news-excerpt {
    font-size: 0.95rem;
    color: var(--medium-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

.news-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--white);
}

.tag.fire-incident {
    background: var(--fire-red);
}

.tag.fire-news {
    background: #9932CC;
}

.tag.regulation-4 {
    background: #FF8C00;
}

.tag.compliance {
    background: #4169E1;
}

.tag.safety {
    background: #28a745;
}

/* Footer */
footer {
    background: var(--dark-gray);
    color: var(--light-gray);
    padding: 1.5rem 0;
    text-align: center;
    margin-top: auto;
}

footer p {
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 0;
    }

    header h1 {
        font-size: 1.4rem;
        margin-bottom: 0.1rem;
    }

    header .subtitle {
        font-size: 0.8rem;
        margin-bottom: 0.75rem;
    }

    nav {
        gap: 0.5rem;
    }

    nav a {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }

    main {
        padding: 1rem 0;
    }

    .page-header {
        margin-bottom: 1rem;
    }

    .page-header h2 {
        font-size: 1.3rem;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
        margin-bottom: 1rem;
        gap: 0.75rem;
    }

    .filter-tags {
        justify-content: flex-start;
        gap: 0.5rem;
    }

    .tag-filter {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }

    .refresh-btn {
        justify-content: center;
        padding: 0.5rem 1rem;
    }

    .news-card {
        padding: 1rem;
    }

    .news-card-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .copy-btn {
        align-self: flex-start;
    }

    .news-title {
        font-size: 1rem;
    }

    .news-excerpt {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    header {
        padding: 0.75rem 0;
    }

    header h1 {
        font-size: 1.2rem;
    }

    header .subtitle {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
    }

    nav a {
        padding: 0.35rem 0.6rem;
        font-size: 0.8rem;
        flex: 1;
        text-align: center;
    }

    .tag-filter {
        padding: 0.35rem 0.6rem;
        font-size: 0.75rem;
    }

    .news-card {
        padding: 0.875rem;
        border-radius: 8px;
    }

    .news-title {
        font-size: 0.95rem;
    }

    .tag {
        padding: 0.25rem 0.5rem;
        font-size: 0.7rem;
    }

    footer {
        padding: 1rem 0;
    }

    footer p {
        font-size: 0.8rem;
    }
}