/* ===================================
   HOW IT WORKS - ANIMATED SECTIONS
   Style: Tesla Minimal + Modular
   =================================== */

/* ===== MAIN LAYOUT ===== */
.how-it-works-main {
    margin-top: 80px;
}

/* ===== ANIMATED SECTION (REUSABLE COMPONENT) ===== */
.animated-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
    background: var(--primary-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.animated-section:nth-child(even) {
    background: var(--secondary-bg);
}

/* ===== SECTION CONTAINER (DESKTOP: SPLIT COLUMNS) ===== */
.section-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

/* ===== CONTENT COLUMN (LEFT SIDE - TEXT) ===== */
.content-column {
    padding: var(--spacing-md);
}

.content-column .headline {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: var(--weight-extra-bold);
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.content-column .subhead {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: var(--weight-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.3px;
    line-height: 1.4;
}

.bullet-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.bullet-list li {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: var(--weight-semibold);
    color: var(--accent-blue);
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.bullet-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

/* ===== ANIMATION COLUMN (RIGHT SIDE - CANVAS) ===== */
.animation-column {
    position: relative;
    aspect-ratio: 16 / 9;
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    cursor: pointer;
}

.animation-column:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* ===== ANIMATION CANVAS (SAFE AREA) ===== */
.animation-canvas {
    width: 100%;
    height: 100%;
    display: block;
    /* 8-10% padding inside canvas via coordinate calculations */
}

/* ===== TOOLTIPS (SHOW ON HOVER) ===== */
.animation-tooltips {
    position: absolute;
    top: 10%;
    right: 10%;
    max-width: 240px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.animation-column:hover .animation-tooltips {
    opacity: 1;
}

.animation-column.paused .animation-tooltips {
    opacity: 1;
}

.tooltip {
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid var(--accent-blue);
    border-radius: 4px;
    padding: 8px 12px;
    margin: 8px 0;
    font-size: 13px;
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    animation: tooltipSlideIn 0.3s ease;
}

.tooltip:nth-child(1) { animation-delay: 0s; }
.tooltip:nth-child(2) { animation-delay: 0.1s; }
.tooltip:nth-child(3) { animation-delay: 0.2s; }

@keyframes tooltipSlideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== PLAYBACK CONTROL (SHOW ON CLICK-PAUSE) ===== */
.playback-control {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 20;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.playback-control.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-pause-btn {
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.play-pause-btn:hover {
    background: var(--accent-blue);
    color: var(--primary-bg);
}

/* ===== PAUSED STATE ===== */
.animation-column.paused {
    border-color: #ff6b6b;
}

.animation-column.paused .play-pause-btn {
    border-color: #ff6b6b;
    color: #ff6b6b;
}

/* ===== CTA SECTION ===== */
.cta-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
    background: linear-gradient(to bottom, var(--primary-bg), #050505);
}

.cta-content {
    text-align: center;
    z-index: 10;
    position: relative;
}

.cta-content .headline {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: var(--weight-extra-bold);
    letter-spacing: -2px;
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.network-map-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
}

/* ===== RESPONSIVE: TABLET (768-1199px) ===== */
@media (max-width: 1199px) {
    .section-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .content-column {
        text-align: center;
    }
    
    .bullet-list {
        display: inline-block;
        text-align: left;
    }
    
    .animation-column {
        max-width: 600px;
    }
}

/* ===== RESPONSIVE: MOBILE (≤767px) ===== */
@media (max-width: 767px) {
    .animated-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .content-column .headline {
        font-size: 36px;
    }
    
    .content-column .subhead {
        font-size: 18px;
    }
    
    .bullet-list li {
        font-size: 16px;
    }
    
    .animation-column {
        aspect-ratio: 4 / 3;
        max-width: 100%;
    }
    
    .animation-tooltips {
        top: auto;
        bottom: 10%;
        right: 10%;
        left: 10%;
        max-width: none;
    }
    
    .tooltip {
        font-size: 11px;
        padding: 6px 10px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
}

/* ===== REDUCED MOTION SUPPORT ===== */
@media (prefers-reduced-motion: reduce) {
    .animated-section {
        animation: none;
    }
    
    .animation-canvas {
        /* Show static first frame only */
        opacity: 0.7;
    }
    
    .tooltip {
        animation: none;
    }
}

/* ===== ACTIVE NAV LINK ===== */
.nav-menu a.active {
    color: var(--accent-blue);
    border-bottom: 2px solid var(--accent-blue);
}

.logo a {
    text-decoration: none;
    color: inherit;
}