/* ===== AI DIRECTED SYSTEM - Approach Section V13 ===== */

.approach-system {
    position: relative;
    padding: 80px 24px;
    max-width: 960px;
    margin: 0 auto;
}

.approach-system .section-label {
    font-size: 12px;
    color: #444;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin: 0 0 20px;
    font-weight: 500;
}

.approach-system .section-title {
    font-size: clamp(34px, 6vw, 56px);
    font-weight: 800;
    margin: 0 0 20px;
    line-height: 1;
    letter-spacing: -0.04em;
    color: #fff;
}

.approach-system .section-kicker {
    font-size: clamp(14px, 2vw, 17px);
    color: #777;
    max-width: 520px;
    line-height: 1.65;
    margin: 0 0 48px;
}

/* Glass container - now animated gradient bg */
.approach-glass {
    position: relative;
    border-radius: 20px;
    padding: 24px;
    margin-bottom: 40px;
    overflow: hidden;
    background: #0A0A0A;
}

/* Animated gradient background */
.approach-gradient-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.5;
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(80,80,180,0.15) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 80% 30%, rgba(120,90,200,0.1) 0%, transparent 70%),
        radial-gradient(ellipse 55% 45% at 60% 80%, rgba(200,80,120,0.08) 0%, transparent 70%),
        radial-gradient(ellipse 45% 55% at 30% 20%, rgba(80,200,120,0.08) 0%, transparent 70%);
    background-size: 200% 200%, 200% 200%, 200% 200%, 200% 200%;
    animation: meshShift 20s ease-in-out infinite;
    border-radius: 20px;
}

@keyframes meshShift {
    0% {
        background-position: 0% 50%, 100% 0%, 50% 100%, 0% 0%;
    }
    25% {
        background-position: 30% 20%, 70% 60%, 20% 40%, 80% 80%;
    }
    50% {
        background-position: 100% 50%, 0% 100%, 80% 20%, 50% 50%;
    }
    75% {
        background-position: 60% 80%, 40% 30%, 100% 70%, 20% 40%;
    }
    100% {
        background-position: 0% 50%, 100% 0%, 50% 100%, 0% 0%;
    }
}

/* Subtle border overlay */
.approach-glass::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.04);
    pointer-events: none;
}

/* Remove old blob styles */
.approach-blobs { display: none; }

/* Layout */
.approach-layout {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    z-index: 1;
}

/* Graph area */
.approach-graph {
    position: relative;
    width: 55%;
    flex-shrink: 0;
}

.approach-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    pointer-events: none;
}

.approach-graph-inner {
    position: relative;
    width: 100%;
    height: 100%;
}

/* Engine hover zone */
.approach-engine-zone {
    position: absolute;
    left: 0;
    top: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    box-sizing: border-box;
    z-index: 2;
}

.approach-engine-label {
    text-align: right;
    transition: all 0.5s cubic-bezier(0.16,1,0.3,1);
}

.approach-engine-title {
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    white-space: nowrap;
    transition: all 0.4s;
    letter-spacing: -0.01em;
    line-height: 1.25;
    font-size: 12px;
}

.approach-engine-title.active {
    color: #fff;
    font-size: 14px;
}

/* Pillar hover zones */
.approach-pillar-zone {
    position: absolute;
    cursor: pointer;
    display: flex;
    align-items: center;
    z-index: 2;
    box-sizing: border-box;
}

.approach-pillar-label {
    display: flex;
    align-items: center;
    gap: 7px;
    transition: all 0.5s cubic-bezier(0.16,1,0.3,1);
    opacity: 0.4;
}

.approach-pillar-label.active {
    opacity: 1;
}

.approach-pillar-num {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.25);
}

.approach-pillar-name {
    font-size: 11px;
    font-weight: 400;
    color: rgba(255,255,255,0.4);
    white-space: nowrap;
    transition: all 0.4s;
}

.approach-pillar-name.active {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
}

/* Description panel */
.approach-desc {
    flex: 1;
    padding-left: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.approach-desc-panel {
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.04);
    padding: 28px;
    border-radius: 16px;
}

.approach-desc-title {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 10px;
    color: #fff;
    letter-spacing: -0.02em;
    transition: all 0.3s;
}

.approach-desc-text {
    font-size: 15px;
    color: rgba(255,255,255,0.55);
    line-height: 1.65;
    margin: 0;
    transition: all 0.3s;
}

/* CTA */
.approach-cta {
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.approach-cta-title {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 700;
    color: #fff;
    margin: 0 0 6px;
    letter-spacing: -0.02em;
}

.approach-cta-sub {
    font-size: 14px;
    color: #555;
    margin: 0;
}

.approach-cta-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 100px;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    background: transparent;
    white-space: nowrap;
}

.approach-cta-link:hover {
    border-color: rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.03);
}

/* Mobile */
@media (max-width: 639px) {
    .approach-system { padding: 60px 16px; }
    .approach-glass { padding: 16px; }
    .approach-layout { flex-direction: column; gap: 24px; }
    .approach-graph { width: 100%; }
    .approach-desc { padding-left: 0; }
    .approach-desc-panel { padding: 20px; }
    .approach-desc-title { font-size: 18px; }
    .approach-desc-text { font-size: 14px; }
    .approach-engine-zone { padding-right: 18px; }
    .approach-engine-title { font-size: 10px; }
    .approach-engine-title.active { font-size: 12px; }
    .approach-pillar-num { font-size: 7px; }
    .approach-pillar-name { font-size: 9px; }
    .approach-pillar-name.active { font-size: 11px; }
    .approach-pillar-label { gap: 5px; }
}