/* CSS Variables - Coinwage Style */
:root {
    --color-primary: #4ECDC4;
    --color-primary-hover: #3dbdb5;
    --color-secondary: #1a2b4a;
    --color-secondary-hover: #152238;
    --color-accent: #F7931A;
    --color-bg-white: #ffffff;
    --color-bg-light: #f5f7fa;
    --color-bg-dark: #1a2b4a;
    --color-text-dark: #1a2b4a;
    --color-text-body: #5a6677;
    --color-text-light: #ffffff;
    --color-text-muted: #8a95a5;
    --color-border: #e1e5eb;
    --color-success: #4ECDC4;
    --color-warning: #F7931A;
    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --border-radius-full: 50px;
    --box-shadow: 0 4px 20px rgba(26, 43, 74, 0.08);
    --box-shadow-hover: 0 8px 30px rgba(26, 43, 74, 0.12);
    --transition: all 0.25s ease;
    --container-max: 1140px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-white);
    color: var(--color-text-body);
    line-height: 1.7;
    font-size: 16px;
}

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

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

h1, h2, h3, h4 {
    color: var(--color-text-dark);
    font-weight: 700;
    line-height: 1.3;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Highlight text */
.highlight {
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-dark);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-text-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(78, 205, 196, 0.4);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    border-color: var(--color-secondary);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--color-text-light);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn-outline:hover {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-text-light);
    border-color: var(--color-text-light);
}

.btn-outline-light:hover {
    background-color: var(--color-text-light);
    color: var(--color-secondary);
}

/* Header */
.header {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.logo-img {
    height: 36px;
    width: auto;
}

.footer-logo {
    filter: brightness(0.3);
}

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

.nav .btn {
    padding: 10px 24px;
    font-size: 0.875rem;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #243b5f 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 5%;
    width: 80px;
    height: 80px;
    background-color: var(--color-accent);
    border-radius: 50%;
    opacity: 0.6;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 15%;
    right: 8%;
    width: 120px;
    height: 120px;
    background-color: var(--color-accent);
    border-radius: 50%;
    opacity: 0.4;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: var(--color-text-light);
    position: relative;
    z-index: 1;
}

.hero h1 .highlight {
    color: var(--color-primary);
}

.hero-perex {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    position: relative;
    z-index: 1;
}

.hero-thanks {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    z-index: 1;
    font-style: italic;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.hero-info {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 550px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-info a {
    color: var(--color-primary);
}

/* Summary List */
.summary {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-white);
}

.summary-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.summary-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.summary-list li:last-child {
    border-bottom: none;
}

.summary-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.summary-list span:last-child {
    color: var(--color-text-body);
    font-size: 1rem;
}

/* Steps */
.steps {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-light);
}

.steps h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
}

.steps h2 .highlight {
    color: var(--color-primary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-text-dark);
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: 50%;
    margin-bottom: var(--spacing-sm);
}

.step h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.step p {
    color: var(--color-text-body);
    font-size: 0.9375rem;
}

.step-optional {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: 4px 12px;
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-full);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Read-only Info */
.readonly-info {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-white);
}

.info-box {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--box-shadow);
}

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

.info-box > p {
    color: var(--color-text-body);
}

.info-box ul {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.info-box li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-body);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.info-box li.positive::before {
    content: '✓';
    color: var(--color-success);
    font-weight: 700;
}

.info-box li.negative::before {
    content: '✗';
    color: #e74c3c;
    font-weight: 700;
}

.info-warning {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(247, 147, 26, 0.1);
    border-radius: var(--border-radius);
    color: var(--color-warning);
    font-weight: 500;
}

/* FAQ */
.faq {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-dark);
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-light);
}

.faq h2 .highlight {
    color: var(--color-primary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: rgba(255, 255, 255, 0.05);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

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

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: var(--transition);
    color: var(--color-primary);
}

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

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

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
}

/* Special Case */
.special-case {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-light);
}

.special-box {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    box-shadow: var(--box-shadow);
}

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

.special-box p {
    color: var(--color-text-body);
    margin-bottom: var(--spacing-md);
}

/* Contact */
.contact {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-white);
    text-align: center;
}

.contact h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-dark);
}

.contact p {
    color: var(--color-text-body);
    margin-bottom: var(--spacing-xs);
}

.contact a {
    color: var(--color-primary);
    font-weight: 600;
}

.contact-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
    background-color: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.footer .logo-text {
    color: var(--color-text-dark);
}

.footer-content p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Decorative elements */
.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background-color: var(--color-accent);
    opacity: 0.5;
    pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero::before,
    .hero::after {
        display: none;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-perex {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 320px;
    }

    .summary {
        margin-top: 0;
    }

    .steps h2,
    .faq h2,
    .contact h2 {
        font-size: 1.5rem;
    }

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

    .faq-question {
        font-size: 0.9375rem;
    }
}

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.875rem;
    }

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

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

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