/* ============================================
   FRONTEND CSS - বাংলা ক্যালকুলেটর
   ============================================ */

/* ============================================
   ROOT VARIABLES & RESET
   ============================================ */

:root {
    --green: #1F5D42;
    --green-light: #F0F7F4;
    --green-dark: #164a34;
    --khaki: #B6A56A;
    --bg: #F8F9F6;
    --white: #FFFFFF;
    --text: #1F2933;
    --muted: #667085;
    --border: #E3E7E2;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 0.3s ease;
    --font: system-ui, -apple-system, "Segoe UI", "Noto Sans Bengali", "Nirmala UI", sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 600;
    color: var(--text);
}

h1 {
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: 12px;
}

h2 {
    font-size: clamp(24px, 3vw, 32px);
    margin-bottom: 16px;
}

h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

p {
    color: var(--muted);
    margin-bottom: 16px;
}

a {
    color: var(--green);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--khaki);
}

a:focus-visible, 
button:focus-visible, 
input:focus-visible, 
select:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 2px;
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }
}

section {
    padding: 64px 0;
}

@media (max-width: 768px) {
    section {
        padding: 48px 0;
    }
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    margin-bottom: 8px;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--white);
    border-bottom: 1px solid var(--border);
    height: 68px;
    display: flex;
    align-items: center;
}

@media (max-width: 640px) {
    header {
        height: 60px;
    }
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--green);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    max-height: 40px;
    width: auto;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.desktop-nav a {
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    position: relative;
}

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green);
    transition: width var(--transition);
}

.desktop-nav a:hover::after {
    width: 100%;
}

.desktop-nav a:hover {
    color: var(--green);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 8px;
    transition: background var(--transition);
    font-size: 18px;
}

.icon-btn:hover {
    background-color: var(--bg);
}

.mobile-menu-btn {
    display: none;
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
    z-index: 99;
    box-shadow: var(--shadow-md);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    display: block;
    padding: 12px 0;
    color: var(--text);
    font-size: 16px;
    font-weight: 500;
    border-bottom: 1px solid var(--border);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a:hover {
    color: var(--green);
    padding-left: 8px;
}

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
    padding: 24px 0 8px;
    font-size: 14px;
    color: var(--muted);
}

.breadcrumb a {
    color: var(--muted);
}

.breadcrumb a:hover {
    color: var(--green);
}

.breadcrumb span {
    margin: 0 8px;
    color: var(--border);
}

.breadcrumb [aria-current="page"] {
    color: var(--text);
    font-weight: 500;
}

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

.hero {
    text-align: center;
    padding: 80px 0 64px;
}

@media (max-width: 768px) {
    .hero {
        padding: 48px 0 40px;
    }
}

.eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--khaki);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.hero h1 {
    margin-bottom: 16px;
    color: var(--text);
}

.hero-desc {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 32px;
    color: var(--muted);
}

/* Search Box */
.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto 16px;
}

.search-box input {
    width: 100%;
    height: 54px;
    padding: 0 50px 0 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 16px;
    font-family: inherit;
    background: var(--white);
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(31, 93, 66, 0.1);
}

.search-box i,
.search-box svg {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
    font-size: 18px;
}

.search-suggestions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.search-suggestion {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 16px;
    font-size: 14px;
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.search-suggestion:hover {
    background: var(--green);
    color: var(--white);
    border-color: var(--green);
}

/* ============================================
   AD PLACEHOLDER
   ============================================ */

.ad-placeholder {
    background-color: var(--bg);
    border: 1px dashed var(--border);
    color: var(--muted);
    text-align: center;
    padding: 24px;
    border-radius: var(--radius);
    font-size: 14px;
    margin: 0 auto;
    max-width: 1180px;
}

/* ============================================
   CATEGORY GRID
   ============================================ */

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

.category-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color var(--transition), transform var(--transition);
}

.category-card:hover {
    border-color: var(--green);
    transform: translateY(-2px);
}

.category-icon {
    width: 40px;
    height: 40px;
    background: var(--bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    margin-bottom: 16px;
    font-size: 18px;
}

.category-card h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 14px;
    margin-bottom: 0;
    line-height: 1.6;
}

/* ============================================
   CALCULATOR GRID / CARDS
   ============================================ */

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .calc-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .calc-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
}

.calc-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
}

.calc-card:hover {
    border-color: var(--green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.calc-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.calc-card-icon {
    width: 36px;
    height: 36px;
    background: var(--bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    flex-shrink: 0;
    font-size: 16px;
}

.calc-card h3 {
    font-size: 17px;
    margin-bottom: 0;
}

.calc-card p {
    font-size: 14px;
    margin-bottom: 16px;
    flex-grow: 1;
}

.calc-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--green);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color var(--transition);
}

.calc-link:hover {
    color: var(--khaki);
}

.calc-link::after {
    content: '→';
    transition: transform var(--transition);
    display: inline-block;
}

.calc-link:hover::after {
    transform: translateX(4px);
}

.no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--muted);
    font-size: 16px;
    display: none;
    grid-column: 1 / -1;
}

/* ============================================
   FILTER BUTTONS (Archive)
   ============================================ */

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    font-size: 14px;
    color: var(--text);
}

.filter-btn:hover {
    border-color: var(--green);
}

.filter-btn.active {
    background: var(--green);
    color: var(--white);
    border-color: var(--green);
}

/* ============================================
   SINGLE TOOL PAGE
   ============================================ */

.tool-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
    align-items: start;
}

@media (max-width: 900px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }
}

.tool-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
}

@media (max-width: 640px) {
    .tool-card {
        padding: 24px 20px;
    }
}

/* Tool Form */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="email"],
.form-group select {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(31, 93, 66, 0.1);
}

.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.2s, box-shadow 0.2s;
    resize: vertical;
    min-height: 100px;
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(31, 93, 66, 0.1);
}

.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.btn-primary {
    flex: 1;
    min-width: 120px;
    height: 48px;
    background: var(--green);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 24px;
}

.btn-primary:hover {
    background: var(--green-dark);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    height: 48px;
    padding: 0 24px;
    background: var(--white);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: var(--bg);
    border-color: var(--muted);
}

/* Result Section */
.result-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    display: none;
}

.result-section.visible {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-main {
    text-align: center;
    margin-bottom: 24px;
}

.result-main p {
    font-size: 16px;
    margin-bottom: 12px;
}

.result-highlight {
    font-size: 28px;
    font-weight: 700;
    color: var(--green);
    line-height: 1.2;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 480px) {
    .result-grid {
        grid-template-columns: 1fr;
    }
}

.result-box {
    background: var(--green-light);
    border: 1px solid rgba(31, 93, 66, 0.1);
    border-radius: 8px;
    padding: 20px 16px;
    text-align: center;
}

.result-box .number {
    font-size: 32px;
    font-weight: 700;
    color: var(--green);
    line-height: 1;
    margin-bottom: 8px;
}

.result-box .label {
    font-size: 14px;
    color: var(--muted);
    font-weight: 500;
}

.result-details {
    background: var(--bg);
    border-radius: 8px;
    padding: 20px;
}

.result-details h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row .label {
    color: var(--muted);
}

.detail-row .value {
    font-weight: 600;
    color: var(--text);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-card h3 {
    font-size: 17px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.sidebar-links {
    list-style: none;
}

.sidebar-links li {
    margin-bottom: 12px;
}

.sidebar-links a {
    font-size: 15px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    transition: color var(--transition);
}

.sidebar-links a:hover {
    color: var(--green);
}

.sidebar-links i,
.sidebar-links svg {
    color: var(--muted);
    flex-shrink: 0;
    width: 18px;
    font-size: 16px;
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-item {
    text-align: center;
    padding: 24px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    margin: 0 auto 16px;
    font-size: 20px;
}

.feature-item h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 14px;
    margin-bottom: 0;
}

/* ============================================
   STEPS / HOW TO USE
   ============================================ */

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    text-align: center;
}

@media (max-width: 768px) {
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.step-item {
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    margin: 0 auto 16px;
}

.step-item h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.step-item p {
    font-size: 15px;
    margin-bottom: 0;
}

/* ============================================
   CONTENT SECTION (Info / Description)
   ============================================ */

.content-section {
    background: var(--white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.content-block {
    max-width: 800px;
    margin: 0 auto;
}

.content-block h2 {
    text-align: center;
    margin-bottom: 24px;
}

.content-block p {
    font-size: 16px;
    margin-bottom: 20px;
    text-align: justify;
}

.content-block ul,
.content-block ol {
    margin-bottom: 20px;
    padding-left: 24px;
    color: var(--muted);
}

.content-block li {
    margin-bottom: 8px;
}

.content-block img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.content-block blockquote {
    background: var(--bg);
    border-left: 4px solid var(--green);
    padding: 16px 24px;
    margin: 20px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.content-block table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.content-block table th,
.content-block table td {
    padding: 10px 16px;
    border: 1px solid var(--border);
    text-align: left;
}

.content-block table th {
    background: var(--bg);
    font-weight: 600;
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-button {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: background var(--transition);
}

.faq-button:hover {
    background: var(--bg);
}

.faq-button i,
.faq-button svg {
    transition: transform 0.3s;
    color: var(--muted);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-button[aria-expanded="true"] i,
.faq-button[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-content-inner {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--muted);
    line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

.footer-brand .logo {
    display: inline-flex;
}

.footer-brand p {
    font-size: 15px;
    margin-top: 16px;
    max-width: 300px;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--muted);
    font-size: 15px;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--green);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
    color: var(--muted);
}

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

.page-404 {
    text-align: center;
    padding: 80px 0;
}

.page-404 .error-code {
    font-size: 80px;
    font-weight: 700;
    color: var(--green);
    line-height: 1;
    margin-bottom: 20px;
}

.page-404 h1 {
    font-size: 32px;
    margin-bottom: 16px;
}

.page-404 p {
    font-size: 18px;
    margin-bottom: 32px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }

.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-40 { margin-bottom: 40px; }
.mb-48 { margin-bottom: 48px; }

.py-16 { padding-top: 16px; padding-bottom: 16px; }
.py-24 { padding-top: 24px; padding-bottom: 24px; }
.py-32 { padding-top: 32px; padding-bottom: 32px; }
.py-40 { padding-top: 40px; padding-bottom: 40px; }
.py-48 { padding-top: 48px; padding-bottom: 48px; }

.px-16 { padding-left: 16px; padding-right: 16px; }
.px-24 { padding-left: 24px; padding-right: 24px; }
.px-32 { padding-left: 32px; padding-right: 32px; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

.w-full { width: 100%; }
.max-w-full { max-width: 100%; }

.hidden { display: none !important; }
.visible { display: block !important; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============================================
   RESPONSIVE TOOLTIP & MISC
   ============================================ */

/* Scrollable table on mobile */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Smooth image loading */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Selection color */
::selection {
    background: var(--green);
    color: var(--white);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--muted);
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    header,
    footer,
    .ad-placeholder,
    .sidebar-card,
    .mobile-menu-btn,
    .icon-btn,
    .search-box,
    .search-suggestions {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .tool-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .result-section {
        display: block !important;
    }
}