/* ===================================
   TARGETED APPROACH LIMITED - MAIN STYLES
   Responsive design for mobile, tablet, and desktop
   =================================== */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - matching PetroSuite style */
    --primary-blue: #2196F3;
    --primary-blue-hover: #1976D2;
    --background-light: #F5F7FA;
    --background-white: #FFFFFF;
    --text-dark: #2C3E50;
    --text-medium: #5A6C7D;
    --text-light: #8899A6;
    --border-color: #E1E8ED;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Font Sizes */
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-hero: 2.5rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-light);
    min-height: 100vh;
}

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

h1 {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-medium);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-blue-hover);
}

/* Header */
.header {
    background-color: var(--background-white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    height: 50px;
    width: auto;
}

.company-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav a {
    color: var(--text-medium);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: var(--primary-blue);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--background-white);
    margin-bottom: var(--spacing-lg);
    border-radius: 12px;
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
}

.hero p {
    font-size: var(--font-size-md);
    color: var(--text-medium);
    max-width: 800px;
    margin: 0 auto var(--spacing-xs) auto;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

/* Cards */
.card {
    background-color: var(--background-white);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.card-icon {
    width: 68px;
    height: 68px;
    margin-bottom: var(--spacing-sm);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon img {
    width: 68px;
    height: 68px;
    object-fit: contain;
}

.card h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
    font-size: 1.25rem;
}

.card p {
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 0;
    text-align: left;
    width: 100%;
}

.card li {
    padding: 0.25rem 0;
    color: var(--text-medium);
    font-size: 0.8125rem;
}

.card li:before {
    content: "•";
    color: var(--primary-blue);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: 0.5em;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--primary-blue);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-md);
    text-decoration: none;
}

.btn:hover {
    background-color: var(--primary-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
    color: white;
}

.btn-secondary {
    background-color: var(--background-white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: white;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* Detail Page Styles */
.detail-container {
    background-color: var(--background-white);
    border-radius: 12px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.detail-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

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

.detail-section {
    margin-bottom: var(--spacing-xl);
}

.detail-section h3 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.detail-section ul {
    list-style: none;
    padding-left: 0;
}

.detail-section li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.detail-section li:before {
    content: "✓";
    color: var(--primary-blue);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Screenshot Gallery */
.screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.screenshot {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* Coming Soon Page */
.coming-soon {
    text-align: center;
    padding: var(--spacing-xxl);
    background-color: var(--background-white);
    border-radius: 12px;
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.coming-soon h1 {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.coming-soon p {
    font-size: var(--font-size-xl);
    color: var(--text-medium);
}

/* Footer */
.footer {
    background-color: var(--background-white);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

/* Back Button */
.back-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    color: var(--text-medium);
    font-weight: 500;
}

.back-button:hover {
    color: var(--primary-blue);
}

/* Software Link Section */
.software-link-section {
    margin-top: var(--spacing-xl);
}

.software-link-card {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #1976D2 100%);
    color: white;
    padding: var(--spacing-xxl) var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--card-shadow-hover);
}

.software-link-card h2 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xxl);
}

.software-link-card p {
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.software-link-card .btn {
    background-color: white;
    color: var(--primary-blue);
    font-weight: 600;
}

.software-link-card .btn:hover {
    background-color: #f0f0f0;
    color: var(--primary-blue-hover);
    transform: translateY(-2px);
}

/* Responsive Design */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --font-size-hero: 1.75rem;
        --font-size-xxl: 1.5rem;
        --spacing-xl: 1.5rem;
        --spacing-xxl: 2rem;
    }

    .header-container {
        padding: var(--spacing-sm);
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--background-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .nav.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-md);
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.875rem;
    }

    .main-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .detail-container {
        padding: var(--spacing-md);
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-hero: 1.5rem;
        --font-size-xxl: 1.25rem;
        --font-size-xl: 1.125rem;
        --spacing-xl: 1rem;
        --spacing-xxl: 1.5rem;
    }

    .main-container {
        padding: var(--spacing-sm);
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .hero h1 {
        font-size: 1.25rem;
    }

    .hero p {
        font-size: 0.8125rem;
    }

    .logo {
        height: 40px;
    }

    .company-name {
        font-size: var(--font-size-sm);
    }

    .card {
        padding: var(--spacing-sm);
    }

    .card-icon {
        width: 56px;
        height: 56px;
    }

    .card-icon img {
        width: 56px;
        height: 56px;
    }

    .card h3 {
        font-size: 1.125rem;
    }

    .detail-container {
        padding: var(--spacing-sm);
    }

    .screenshot-gallery {
        grid-template-columns: 1fr;
    }

    .coming-soon h1 {
        font-size: 1.75rem;
    }

    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* ===================================
   PRICING PAGE STYLES
   =================================== */

/* Notice Banner */
.notice-banner {
    background-color: #FFF4E5;
    border-left: 4px solid #E8A012;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: 8px;
    display: none;
}

.notice-banner p {
    color: #8B5A00;
    margin: 0;
}

/* Terms Notice */
.terms-notice {
    background-color: #E3F2FD;
    border-left: 4px solid var(--primary-blue);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    border-radius: 8px;
}

.terms-notice p {
    color: var(--text-dark);
    margin: 0;
}

.terms-notice a {
    color: var(--primary-blue);
    text-decoration: underline;
    font-weight: 600;
}

.terms-notice a:hover {
    color: var(--primary-blue-hover);
}

/* Pricing Section */
.pricing-section {
    margin-bottom: var(--spacing-xxl);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.pricing-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
}

.pricing-header h2 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.pricing-header p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-medium);
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin: 0 auto;
}

.pricing-grid-simple {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    max-width: 800px;
}

/* Pricing Cards */
.pricing-card {
    background-color: var(--background-white);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    box-shadow: 0 4px 20px rgba(33, 150, 243, 0.2);
}

/* Pricing Badge */
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-blue);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* Pricing Tier */
.pricing-tier {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

/* Pricing Price */
.pricing-price {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.pricing-price .currency {
    font-size: var(--font-size-xl);
    color: var(--text-medium);
    vertical-align: top;
    margin-right: 2px;
}

.pricing-price .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1;
}

.pricing-price .period {
    font-size: var(--font-size-md);
    color: var(--text-medium);
}

.pricing-price .amount-text {
    font-size: var(--font-size-xxl);
    font-weight: 600;
    color: var(--text-dark);
}

.pricing-price .amount-free {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
    line-height: 1;
}

.pricing-price .period-sub {
    font-size: var(--font-size-md);
    color: var(--text-medium);
    display: block;
    margin-top: var(--spacing-xs);
}

/* Pricing Features */
.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl) 0;
    flex-grow: 1;
}

.pricing-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-medium);
    font-size: var(--font-size-md);
    display: flex;
    align-items: flex-start;
}

.pricing-features li:before {
    content: "✓";
    color: var(--primary-blue);
    font-weight: bold;
    margin-right: var(--spacing-sm);
    font-size: 1.2em;
}

/* Buy Button */
.buy-button {
    width: 100%;
    margin-top: auto;
}

/* FAQ Section */
.pricing-faq {
    background-color: var(--background-white);
    border-radius: 12px;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.pricing-faq h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-dark);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.faq-item h3 {
    color: var(--text-dark);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--text-medium);
    margin: 0;
}

/* Pricing Page Responsive */
@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-price .amount {
        font-size: 2.5rem;
    }

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

@media (max-width: 480px) {
    .pricing-card {
        padding: var(--spacing-lg);
    }

    .pricing-price .amount {
        font-size: 2rem;
    }

    .pricing-icon {
        width: 60px;
        height: 60px;
    }
}