/* ─────────────────────────────────────────
   PRESENTATION SECTION
───────────────────────────────────────── */
#presentation-section {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 68px);
    padding: 5rem 1.5rem 4rem;
    text-align: center;
    overflow: hidden;
}

/* ── Glow blobs ── */
.pres-glow-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: 0;
}
.pres-glow-blob--violet {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(91,45,171,0.28) 0%, transparent 68%);
    top: 5%;
    left: -12%;
    animation: blob-drift 13s ease-in-out infinite alternate;
}
.pres-glow-blob--cyan {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(79,195,247,0.16) 0%, transparent 68%);
    bottom: 10%;
    right: -8%;
    animation: blob-drift 15s ease-in-out infinite alternate-reverse;
}
/* Extra blob centre */
.pres-glow-blob--center {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(139,111,240,0.1) 0%, transparent 65%);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: blob-drift 18s ease-in-out infinite alternate;
}

@keyframes blob-drift {
    from { transform: translateY(0px) scale(1); }
    to   { transform: translateY(36px) scale(1.07); }
}

/* ── Content wrapper ── */
.pres-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.2rem;
}

/* ── Badge ── */
.pres-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.38rem 1rem;
    border-radius: 999px;
    background: rgba(91,45,171,0.16);
    border: 1px solid rgba(139,111,240,0.32);
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    box-shadow: 0 0 22px rgba(91,45,171,0.22), inset 0 1px 0 rgba(255,255,255,0.06);
    animation: badge-fadein 0.8s ease both;
    backdrop-filter: blur(8px);
}
.pres-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 7px var(--cyan);
    animation: notif-blink 2s ease-in-out infinite;
}

/* ── Title ── */
.pres-title {
    font-family: var(--font-display);
    font-size: clamp(2.6rem, 6.5vw, 4.4rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--text);
    animation: pres-slidein 0.7s var(--ease-smooth) 0.1s both;
    text-shadow: 0 0 60px rgba(91,45,171,0.2);
}
.pres-title-gradient {
    background: linear-gradient(95deg, var(--accent) 0%, var(--cyan) 50%, var(--violet-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    background-size: 200% 100%;
    animation: shimmer-text 6s linear infinite;
    display: inline-block;
}

@keyframes shimmer-text {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Subtitle ── */
.pres-subtitle {
    font-family: var(--font-body);
    font-size: 1.08rem;
    color: rgba(220,224,255,0.82);
    line-height: 1.75;
    max-width: 560px;
    animation: pres-slidein 0.7s var(--ease-smooth) 0.22s both;
    font-weight: 300;
}
.pres-subtitle strong {
    color: #fff;
    font-weight: 600;
}

/* ── Feature cards ── */
.pres-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    animation: pres-slidein 0.7s var(--ease-smooth) 0.34s both;
}
.pres-feature-card {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1.1rem;
    border-radius: 12px;
    background: rgba(255,255,255,0.038);
    border: 1px solid rgba(255,255,255,0.075);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    color: rgba(232,234,246,0.88);
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ease-bounce), background 0.25s;
    cursor: default;
    position: relative;
    overflow: hidden;
}
.pres-feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(91,45,171,0.1), rgba(79,195,247,0.05));
    opacity: 0;
    transition: opacity 0.25s;
    border-radius: inherit;
}
.pres-feature-card:hover {
    border-color: rgba(139,111,240,0.45);
    box-shadow: 0 0 24px rgba(91,45,171,0.25), 0 4px 12px rgba(0,0,0,0.3);
    transform: translateY(-3px);
}
.pres-feature-card:hover::before { opacity: 1; }

.pres-feature-icon {
    font-size: 1rem;
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

/* ── Divider ── */
.pres-divider {
    width: 100%;
    max-width: 360px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(139,111,240,0.6), var(--cyan), rgba(139,111,240,0.6), transparent);
    background-size: 200% 100%;
    animation: shimmer-border 5s linear infinite;
    opacity: 0.65;
    border-radius: 1px;
}

/* ── CTA buttons ── */
.pres-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    justify-content: center;
    animation: pres-slidein 0.7s var(--ease-smooth) 0.45s both;
}
.pres-btn-primary {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.8rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--violet), var(--blue-mid));
    border: 1px solid rgba(139,111,240,0.5);
    color: #fff;
    font-family: var(--font-display);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-decoration: none;
    box-shadow: 0 0 28px rgba(91,45,171,0.45), 0 4px 16px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.12);
    transition: box-shadow 0.25s, transform 0.25s var(--ease-bounce);
}
.pres-btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 38%, rgba(255,255,255,0.12) 50%, transparent 62%);
    transform: translateX(-100%);
    transition: transform 0.55s ease;
}
.pres-btn-primary:hover::before { transform: translateX(100%); }
.pres-btn-primary:hover {
    box-shadow: 0 0 42px rgba(91,45,171,0.65), 0 8px 24px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.16);
    transform: translateY(-3px);
    color: #fff;
    text-decoration: none;
}

.pres-btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.8rem;
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text);
    font-family: var(--font-display);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-decoration: none;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ease-bounce), background 0.25s;
}
.pres-btn-ghost:hover {
    border-color: rgba(79,195,247,0.45);
    box-shadow: 0 0 22px rgba(79,195,247,0.2), 0 4px 16px rgba(0,0,0,0.25);
    background: rgba(79,195,247,0.06);
    transform: translateY(-3px);
    color: var(--text);
    text-decoration: none;
}

/* ── Stats row ── */
.pres-stats {
    display: flex;
    gap: 2.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: pres-slidein 0.7s var(--ease-smooth) 0.55s both;
}
.pres-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}
.pres-stat-value {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}
.pres-stat-label {
    font-family: var(--font-body);
    font-size: 0.73rem;
    color: var(--muted);
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ── Animations ── */
@keyframes pres-slidein {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes badge-fadein {
    from { opacity: 0; transform: scale(0.88); }
    to   { opacity: 1; transform: scale(1); }
}

/* ── Responsive ── */
@media (max-width: 576px) {
    .pres-title { font-size: 2.1rem; }
    .pres-features { gap: 0.55rem; }
    .pres-feature-card { font-size: 0.76rem; padding: 0.5rem 0.85rem; }
    .pres-btn-primary,
    .pres-btn-ghost { width: 100%; justify-content: center; }
    .pres-stats { gap: 1.5rem; }
    .pres-stat-value { font-size: 1.4rem; }
}