/* ========================================
   Alcedo LP - Main Stylesheet
   ======================================== */

/* CSS Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables (from CLAUDE.md) */
:root {
    /* Primary Colors */
    --primary-color: #05A7BE;
    --primary-hover-color: #087EA2;
    --primary-light-color: #E0F5F8;

    /* Secondary Colors */
    --secondary-color: #1ED7CD;
    --secondary-hover-color: #18C4B8;
    --secondary-light-color: #E6FAF9;

    /* Accent Colors */
    --accent-color: #FF7722;
    --accent-hover-color: #E66A1F;
    --accent-light-color: #FFF0E6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #05A7BE, #1ED7CD);
    --gradient-accent: linear-gradient(135deg, #FF7722, #FFB366);

    /* Background Colors */
    --dark-background: #0A1628;
    --background-color: #F0F7FA;
    --card-background: #FFFFFF;

    /* Text Colors */
    --text-color: #2C3E50;
    --text-light-color: #5A6B7B;
    --text-dark-color: #1A2533;

    /* Border & Shadow */
    --border-color: #D0E1E9;
    --light-border-color: #E5F0F5;
    --hover-color: #E1EEF3;
    --shadow-color: rgba(5, 167, 190, 0.1);
    --shadow-large: 0 20px 40px rgba(5, 167, 190, 0.15);
    --shadow-card: 0 4px 20px rgba(5, 167, 190, 0.1);

    /* Transitions */
    --transition-duration: 0.3s;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 50%;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-dark-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    color: var(--text-color);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-duration);
    text-decoration: none;
    gap: 0.5rem;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(5, 167, 190, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 167, 190, 0.4);
}

.btn--accent {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 119, 34, 0.3);
}

.btn--accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 119, 34, 0.4);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn--white {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn--white:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn--outline-white {
    background: transparent;
    border: 2px solid white;
    color: white;
}

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

.btn--lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-duration);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--container-padding);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.header__logo img {
    height: 40px;
    width: auto;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.header__nav-list {
    display: flex;
    gap: 1.5rem;
}

.header__nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    padding: 0.5rem 0;
    position: relative;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-duration);
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header__switch-link {
    font-size: 0.875rem;
    color: var(--text-light-color);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-duration);
}

.header__switch-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.header__menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-color);
    transition: all var(--transition-duration);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: 8rem 0 5rem;
    background: linear-gradient(135deg, var(--background-color) 0%, var(--primary-light-color) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: var(--gradient-primary);
    opacity: 0.05;
    border-radius: 50%;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__badge {
    display: inline-block;
    background: var(--accent-light-color);
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero__title {
    font-size: 2.75rem;
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--text-light-color);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero__cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero__image {
    position: relative;
    z-index: 1;
}

.hero__image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-large);
}

/* Dark Hero (for developers page) */
.hero--dark {
    background: var(--dark-background);
    color: white;
}

.hero--dark::before {
    background: var(--secondary-color);
    opacity: 0.1;
}

.hero--dark .hero__title,
.hero--dark .hero__subtitle {
    color: white;
}

.hero--dark .hero__subtitle {
    opacity: 0.8;
}

.hero--dark .hero__badge {
    background: rgba(30, 215, 205, 0.2);
    color: var(--secondary-color);
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-xxl) 0;
}

.section--light {
    background: white;
}

.section--gray {
    background: var(--background-color);
}

.section--gradient {
    background: var(--gradient-primary);
    color: white;
}

.section__header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.section__title {
    margin-bottom: var(--spacing-md);
}

.section__subtitle {
    color: var(--text-light-color);
    font-size: 1.125rem;
}

.section__cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.section--gradient .section__subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--card-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-duration);
    border: 1px solid var(--light-border-color);
}

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

.card__icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    color: white;
}

.card__icon--accent {
    background: var(--gradient-accent);
}

.card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.card__description {
    color: var(--text-light-color);
    line-height: 1.7;
}

/* Card Grid */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.card-grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========================================
   Pain Points Section
   ======================================== */
.pain-points {
    background: white;
}

.pain-card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.pain-card__icon {
    width: 80px;
    height: 80px;
    background: var(--accent-light-color);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
}

.pain-card__title {
    font-size: 1.125rem;
    color: var(--text-dark-color);
}

/* ========================================
   Solution Section
   ======================================== */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.solution-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.solution-item__number {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto var(--spacing-md);
}

.solution-item__title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.solution-item__description {
    color: var(--text-light-color);
    font-size: 0.9rem;
}

/* ========================================
   Features Section
   ======================================== */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.feature-row:nth-child(even) {
    direction: rtl;
}

.feature-row:nth-child(even) > * {
    direction: ltr;
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature__content {
    padding: var(--spacing-lg);
}

.feature__number {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.feature__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.feature__description {
    color: var(--text-light-color);
    line-height: 1.8;
}

.feature__image {
    background: var(--primary-light-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.feature__image-icon {
    font-size: 5rem;
    opacity: 0.5;
}

/* ========================================
   Steps / Flow Section
   ======================================== */
.steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--border-color);
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    padding: 0 var(--spacing-sm);
}

.step__number {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 15px rgba(5, 167, 190, 0.3);
}

.step__title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.step__description {
    font-size: 0.875rem;
    color: var(--text-light-color);
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    border: 2px solid var(--light-border-color);
    transition: all var(--transition-duration);
}

.pricing-card:hover {
    border-color: var(--primary-color);
}

.pricing-card--featured {
    border-color: var(--primary-color);
    position: relative;
}

.pricing-card--featured::before {
    content: 'おすすめ';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-accent);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: var(--border-radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.pricing-card__price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.pricing-card__price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light-color);
}

.pricing-card__description {
    color: var(--text-light-color);
    margin-bottom: var(--spacing-lg);
}

.pricing-card__features {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.pricing-card__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--light-border-color);
}

.pricing-card__feature:last-child {
    border-bottom: none;
}

.pricing-card__feature-icon {
    color: var(--secondary-color);
    font-weight: bold;
}

/* Campaign Badge */
.campaign-badge {
    background: var(--accent-light-color);
    border: 2px dashed var(--accent-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    max-width: 600px;
    margin: var(--spacing-xl) auto 0;
}

.campaign-badge__title {
    color: var(--accent-color);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.campaign-badge__description {
    color: var(--text-color);
}

/* Pricing Steps (3ステップ料金表示) */
.pricing-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.pricing-step {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--light-border-color);
    transition: all var(--transition-duration);
}

.pricing-step:hover {
    box-shadow: var(--shadow-large);
    transform: translateY(-3px);
}

.pricing-step:first-child {
    border-top: 4px solid var(--secondary-color);
}

.pricing-step:nth-child(2) {
    border-top: 4px solid var(--primary-color);
}

.pricing-step:nth-child(3) {
    border-top: 4px solid var(--accent-color);
}

.pricing-step__header {
    margin-bottom: var(--spacing-md);
}

.pricing-step__number {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.pricing-step:first-child .pricing-step__number {
    background: var(--secondary-color);
}

.pricing-step:nth-child(3) .pricing-step__number {
    background: var(--gradient-accent);
}

.pricing-step__title {
    font-size: 1.1rem;
    color: var(--text-dark-color);
    line-height: 1.4;
}

.pricing-step__price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark-color);
    margin-bottom: var(--spacing-sm);
}

.pricing-step__price strong {
    font-size: 1.75rem;
    color: var(--primary-color);
}

.pricing-step__price--free {
    font-size: 2rem;
    color: var(--secondary-color);
}

.pricing-step__price-table {
    margin-bottom: var(--spacing-sm);
}

.pricing-step__price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--light-border-color);
}

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

.pricing-step__price-value {
    font-weight: 700;
    color: var(--primary-color);
}

.pricing-step__note {
    font-size: 0.85rem;
    color: var(--text-light-color);
    margin-bottom: var(--spacing-sm);
}

.pricing-step__payment {
    display: inline-block;
    background: var(--primary-light-color);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.pricing-step__features {
    list-style: none;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--light-border-color);
}

.pricing-step__features li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-color);
}

.pricing-step__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.pricing-notice {
    background: var(--accent-light-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.pricing-notice p {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin: 0;
}

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

/* ========================================
   FAQ Section
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--light-border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark-color);
    text-align: left;
    transition: background var(--transition-duration);
}

.faq-question:hover {
    background: var(--hover-color);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform var(--transition-duration);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-duration);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer__content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-light-color);
    line-height: 1.8;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: var(--gradient-primary);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    color: white;
}

.cta-section__title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.cta-section__subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.cta-section__buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ========================================
   Comparison Section (for developers)
   ======================================== */
.comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-lg);
    align-items: stretch;
}

.comparison__item {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
}

.comparison__item--before {
    border: 2px solid var(--border-color);
}

.comparison__item--after {
    border: 2px solid var(--secondary-color);
    background: var(--secondary-light-color);
}

.comparison__title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.comparison__list {
    list-style: none;
}

.comparison__list li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.comparison__arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
}

/* ========================================
   Benefits Section (for developers)
   ======================================== */
.benefit-card {
    text-align: center;
}

.benefit-card__icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2.5rem;
    color: white;
    box-shadow: 0 10px 30px rgba(5, 167, 190, 0.3);
}

.benefit-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.benefit-card__description {
    color: var(--text-light-color);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark-background);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer__container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__brand {
    max-width: 300px;
}

.footer__logo {
    height: 40px;
    margin-bottom: var(--spacing-md);
}

.footer__description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer__column-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--spacing-sm);
}

.footer__links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    transition: color var(--transition-duration);
}

.footer__links a:hover {
    color: var(--secondary-color);
}

.footer__company-info {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer__company-logo {
    height: 24px;
    opacity: 0.7;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .hero__title {
        font-size: 2.25rem;
    }

    .card-grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .header__nav-list {
        display: none;
    }

    .header__menu-toggle {
        display: flex;
    }

    .header__switch-link {
        display: none;
    }

    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__cta {
        justify-content: center;
    }

    .hero__image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }

    .card-grid--3,
    .card-grid--2 {
        grid-template-columns: 1fr;
    }

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

    .feature-row {
        grid-template-columns: 1fr;
    }

    .feature-row:nth-child(even) {
        direction: ltr;
    }

    .feature__image {
        order: -1;
    }

    .steps {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .steps::before {
        display: none;
    }

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

    .pricing-steps {
        grid-template-columns: 1fr;
    }

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

    .comparison__arrow {
        transform: rotate(90deg);
    }

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

@media (max-width: 600px) {
    html {
        font-size: 14px;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .hero {
        padding: 6rem 0 3rem;
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .hero__cta {
        flex-direction: column;
    }

    .hero__cta .btn {
        width: 100%;
    }

    .card-grid--4 {
        grid-template-columns: 1fr;
    }

    .pricing-steps {
        grid-template-columns: 1fr;
    }

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

    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* Mobile Navigation (overlay) */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform var(--transition-duration);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav__list {
    list-style: none;
    text-align: center;
}

.mobile-nav__list li {
    margin-bottom: var(--spacing-lg);
}

.mobile-nav__list a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark-color);
}

.mobile-nav__close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }