/* ================================
   How It Works - Premium Design
   ================================ */

/* Hero Section */
.hiw-hero {
    padding-top: calc(80px + var(--space-20));
    padding-bottom: var(--space-16);
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hiw-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 200%;
    background: radial-gradient(ellipse at center top, rgba(0, 209, 136, 0.12) 0%, transparent 50%);
    pointer-events: none;
}

.hero-label {
    display: inline-block;
    font-size: var(--font-size-caption);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin-bottom: var(--space-4);
    position: relative;
    z-index: 1;
}

.hiw-hero h1 {
    font-size: var(--font-size-display);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-4);
    letter-spacing: var(--letter-spacing-tight);
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: var(--font-size-body-lg);
    color: var(--color-gray-400);
    max-width: 600px;
    margin: 0 auto var(--space-10);
    line-height: var(--line-height-relaxed);
    position: relative;
    z-index: 1;
}

/* User Toggle */
.user-toggle {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    padding: 6px;
    gap: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.toggle-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: none;
    background: transparent;
    color: var(--color-gray-400);
    font-size: var(--font-size-body-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    font-family: inherit;
}

.toggle-btn svg {
    opacity: 0.6;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.toggle-btn:hover {
    color: var(--color-white);
}

.toggle-btn:hover svg {
    opacity: 1;
}

.toggle-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(0, 209, 136, 0.3);
}

.toggle-btn.active svg {
    opacity: 1;
}

/* Content Wrapper */
.content-wrapper {
    display: none;
}

.content-wrapper.active {
    display: block;
}

/* Steps Section */
.steps-section {
    padding: var(--space-20) 0;
    background-color: var(--color-background);
    overflow-x: hidden;
}

.steps-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

/* Timeline line */
.steps-timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-subtle) 100%);
}

@media (min-width: 768px) {
    .steps-timeline::before {
        left: 32px;
    }
}

/* Step Item */
.step-item {
    position: relative;
    padding-left: 72px;
    padding-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .step-item {
        padding-left: 96px;
        padding-bottom: var(--space-16);
    }
}

.step-item:last-child {
    padding-bottom: 0;
}

/* Step Number Badge */
.step-number-badge {
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-body);
    font-weight: 700;
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(0, 209, 136, 0.3);
    z-index: 2;
}

@media (min-width: 768px) {
    .step-number-badge {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-h4);
    }
}

/* Step Content Card */
.step-content {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    transition: all var(--duration-normal) var(--ease-out);
    text-align: left;
    align-items: flex-start;
}

@media (min-width: 640px) {
    .step-content {
        flex-direction: row;
        align-items: flex-start;
        padding: var(--space-8);
        gap: var(--space-6);
    }
}

.step-content:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* Step Icon */
.step-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary-subtle) 0%, rgba(0, 209, 136, 0.08) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--duration-normal) var(--ease-out);
}

@media (min-width: 768px) {
    .step-icon {
        width: 72px;
        height: 72px;
    }
}

.step-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-primary);
}

@media (min-width: 768px) {
    .step-icon svg {
        width: 32px;
        height: 32px;
    }
}

.step-content:hover .step-icon {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    box-shadow: 0 8px 24px rgba(0, 209, 136, 0.3);
}

.step-content:hover .step-icon svg {
    stroke: var(--color-white);
}

/* Step Text */
.step-text {
    flex: 1;
    min-width: 0;
    text-align: left;
    width: 100%;
}

.step-text h3 {
    font-size: var(--font-size-h4);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: var(--letter-spacing-tight);
    text-align: left;
}

@media (min-width: 768px) {
    .step-text h3 {
        font-size: var(--font-size-h3);
    }
}

.step-text > p {
    font-size: var(--font-size-body-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
    text-align: left;
}

/* Step Features List */
.step-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.step-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--font-size-body-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

.step-features li::before {
    content: '✓';
    width: 18px;
    height: 18px;
    background: var(--color-primary-subtle);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 2px;
}

/* Features Highlight Section */
.features-highlight {
    padding: var(--space-20) 0;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-background) 100%);
    overflow-x: hidden;
}

.features-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.features-header h2 {
    font-size: var(--font-size-h2);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
    letter-spacing: var(--letter-spacing-tight);
}

.features-header p {
    font-size: var(--font-size-body-lg);
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-card .feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary-subtle) 0%, rgba(0, 209, 136, 0.08) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    transition: all var(--duration-normal) var(--ease-out);
}

.feature-card .feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-primary);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    box-shadow: 0 8px 24px rgba(0, 209, 136, 0.3);
}

.feature-card:hover .feature-icon svg {
    stroke: var(--color-white);
}

.feature-card h3 {
    font-size: var(--font-size-h4);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.feature-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-card li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--font-size-body-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    padding: var(--space-2) 0;
}

.feature-card li::before {
    content: '•';
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.2em;
    line-height: 1.3;
}

/* CTA Section */
.hiw-cta {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hiw-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hiw-cta h2 {
    font-size: var(--font-size-h2);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-3);
    letter-spacing: var(--letter-spacing-tight);
}

.hiw-cta p {
    font-size: var(--font-size-body-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
}

.hiw-cta .cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    justify-content: center;
    align-items: center;
}

@media (min-width: 480px) {
    .hiw-cta .cta-buttons {
        flex-direction: row;
    }
}

/* Light Button */
.btn-light {
    background: var(--color-white);
    color: var(--color-primary);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-body);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-normal) var(--ease-out);
    border: 2px solid var(--color-white);
}

.btn-light:hover {
    background: transparent;
    color: var(--color-white);
}

/* Outline Light Button */
.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-body);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-normal) var(--ease-out);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

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

/* Responsive Adjustments */
@media (max-width: 767px) {
    .hiw-hero {
        padding-top: calc(80px + var(--space-12));
        padding-bottom: var(--space-12);
    }

    .hiw-hero h1 {
        font-size: var(--font-size-h1);
    }

    .hero-subtitle {
        font-size: var(--font-size-body);
    }

    .user-toggle {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
    }

    .toggle-btn {
        justify-content: center;
        width: 100%;
    }

    .steps-section {
        padding: var(--space-12) 0;
    }

    .features-highlight {
        padding: var(--space-12) 0;
    }

    .hiw-cta {
        padding: var(--space-12) 0;
    }

    .hiw-cta h2 {
        font-size: var(--font-size-h3);
    }
}

/* Extra small screens */
@media (max-width: 479px) {
    .hiw-hero {
        padding-top: calc(72px + var(--space-10));
        padding-bottom: var(--space-10);
    }

    .hero-label {
        font-size: var(--font-size-small);
    }

    .step-item {
        padding-left: 56px;
    }

    .steps-timeline::before {
        left: 16px;
    }

    .step-number-badge {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-body-sm);
    }

    .step-content {
        padding: var(--space-5);
    }

    .step-icon {
        width: 48px;
        height: 48px;
    }

    .step-icon svg {
        width: 24px;
        height: 24px;
    }

    .feature-card {
        padding: var(--space-6);
    }

    .feature-card .feature-icon {
        width: 48px;
        height: 48px;
    }

    .feature-card .feature-icon svg {
        width: 24px;
        height: 24px;
    }

    .btn-light,
    .btn-outline-light {
        padding: var(--space-3) var(--space-6);
        font-size: var(--font-size-body-sm);
        width: 100%;
    }

    .hiw-cta .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
}

/* ================================
   Mobile Overflow Prevention
   ================================ */

@media (max-width: 767px) {
    .hiw-hero,
    .steps-section,
    .features-highlight,
    .hiw-cta {
        overflow-x: hidden;
        max-width: 100vw;
    }

    .step-content {
        max-width: 100%;
        overflow: hidden;
    }

    .step-features li {
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .features-grid {
        max-width: 100%;
    }

    .feature-card {
        max-width: 100%;
        overflow: hidden;
    }
}