/* ========================================
   REVERSE SALES TAX CALCULATOR
   Main Stylesheet
   Color Theme: #edb826 (gold) & #2b2b2b (charcoal)
   ======================================== */

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    --primary-color: #edb826;
    --secondary-color: #2b2b2b;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a1a;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --header-height: 70px;
    --max-width: 1200px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul {
    list-style: none;
}

button {
    border: none;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

/* ========================================
   CONTAINER & UTILITY CLASSES
   ======================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    margin: 1rem auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.header.scroll-header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.nav__logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.nav__list {
    display: flex;
    gap: 2rem;
}

.nav__link {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link:hover {
    color: var(--primary-color);
}

.nav__link.active {
    color: var(--primary-color);
}

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--secondary-color);
    cursor: pointer;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #2b2b2b 100%);
    color: white;
    overflow: hidden;
    margin-top: var(--header-height);
}

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.floating-icon {
    position: absolute;
    font-size: 2rem;
    color: rgba(237, 184, 38, 0.2);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, #edb826 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 50px;
    box-shadow: 0 8px 20px rgba(237, 184, 38, 0.3);
    transition: var(--transition);
}

.hero__cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(237, 184, 38, 0.4);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   CALCULATOR SECTION
   ======================================== */
.calculator-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: start;
}

.calculator-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.calculator-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a1a1a 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.calculator-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calculator-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
}

.calculator-body {
    padding: 2.5rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background-color: #f8f9fa;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(237, 184, 38, 0.1);
}

.input-prefix,
.input-suffix {
    padding: 0 1rem;
    color: var(--text-light);
    font-weight: 600;
    background-color: rgba(237, 184, 38, 0.1);
}

.input-wrapper input {
    flex: 1;
    padding: 1rem;
    background: transparent;
    color: var(--secondary-color);
    font-size: 1.1rem;
    font-weight: 600;
}

.error-message {
    display: block;
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.3rem;
    min-height: 1.2rem;
}

.calculate-btn {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d4a11f 100%);
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(237, 184, 38, 0.3);
    transition: var(--transition);
    margin-top: 1rem;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(237, 184, 38, 0.4);
}

.calculate-btn.btn-clicked {
    transform: scale(0.98);
}

.results {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 8px;
    border: 2px solid var(--border-color);
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.3s ease;
}

.results.show {
    opacity: 1;
    max-height: 500px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item.highlight {
    background-color: rgba(237, 184, 38, 0.1);
    border-radius: 8px;
    margin-top: 0.5rem;
    border-bottom: none;
}

.result-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-weight: 500;
}

.result-label i {
    color: var(--primary-color);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.reset-btn {
    width: 100%;
    padding: 1rem;
    background-color: transparent;
    color: var(--text-light);
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.reset-btn:hover {
    background-color: #f8f9fa;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.reset-btn.btn-clicked {
    transform: scale(0.98);
}

.calculator-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.info-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.info-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========================================
   STEPS GRID
   ======================================== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.step-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d4a11f 100%);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(237, 184, 38, 0.3);
}

.step-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin: 1.5rem 0 1rem;
}

.step-card h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.step-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ========================================
   ACCORDION
   ======================================== */
.tax-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background: white;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.accordion-header {
    padding: 1.5rem;
    background-color: var(--bg-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: rgba(237, 184, 38, 0.1);
}

.accordion-header h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.accordion-header i.fa-chevron-down {
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header i.fa-chevron-down {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.5rem;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
    padding: 1.5rem;
}

.accordion-content p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.accordion-content ul {
    list-style: none;
    margin: 1rem 0;
}

.accordion-content ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-color);
}

.accordion-content ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
    line-height: 1;
}

.accordion-content .note {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 1rem;
    background-color: rgba(237, 184, 38, 0.1);
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-color);
}

.accordion-content .note i {
    color: var(--primary-color);
    margin-top: 0.2rem;
}

/* ========================================
   USE CASES & INDUSTRIES
   ======================================== */
.use-cases-grid,
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.use-case-card,
.industry-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.use-case-card.animate-in,
.industry-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.use-case-card:hover,
.industry-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.use-case-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d4a11f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.use-case-icon i {
    font-size: 2rem;
    color: white;
}

.use-case-card h3,
.industry-card h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.use-case-card p,
.industry-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.industry-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.industry-header i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.industry-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.benefit-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    background-color: rgba(237, 184, 38, 0.1);
    color: var(--secondary-color);
    font-size: 0.85rem;
    border-radius: 20px;
    font-weight: 500;
}

.benefit-tag i {
    color: var(--primary-color);
    font-size: 0.75rem;
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq-grid {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 1.5rem;
    background-color: var(--bg-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: rgba(237, 184, 38, 0.1);
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.faq-question h3 i {
    color: var(--primary-color);
}

.faq-question > i {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question > i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1.5rem;
    padding-top: 0;
}

.faq-answer p {
    color: var(--text-color);
    line-height: 1.8;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a1a1a 100%);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(237, 184, 38, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   SCROLL TO TOP BUTTON
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d4a11f 100%);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(237, 184, 38, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(237, 184, 38, 0.4);
}

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: #f8f9fa;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(237, 184, 38, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-error {
    display: block;
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.3rem;
    min-height: 1.2rem;
}

.form-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: none;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.submit-btn {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d4a11f 100%);
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(237, 184, 38, 0.3);
    transition: var(--transition);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(237, 184, 38, 0.4);
}

/* ========================================
   CONTENT PAGES
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a1a1a 100%);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    margin-top: var(--header-height);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
}

.content-section {
    padding: 4rem 0;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.content-wrapper h2 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-wrapper h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content-wrapper p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.content-wrapper ul,
.content-wrapper ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.content-wrapper ul li,
.content-wrapper ol li {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.content-wrapper strong {
    color: var(--secondary-color);
    font-weight: 600;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media screen and (max-width: 968px) {
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }
    
    .calculator-info {
        flex-direction: row;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        right: -100%;
        width: 70%;
        height: calc(100vh - var(--header-height));
        background-color: white;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        padding: 2rem;
    }
    
    .nav__menu.show-menu {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav__toggle {
        display: block;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .steps-grid,
    .use-cases-grid,
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .calculator-info {
        flex-direction: column;
    }
}

@media screen and (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .calculator-body {
        padding: 1.5rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .content-wrapper {
        padding: 1.5rem;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .header,
    .nav,
    .hero,
    .footer,
    .scroll-top {
        display: none;
    }
    
    .calculator-card,
    .content-wrapper {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}