/* ==============================================
   AEROFIELD — HERO SECTION
   Full-viewport landing with Indus seal motif.
   ============================================== */

.hero {
    height: 100vh;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--navbar-height) 20px 44px;
    position: relative;
    overflow: hidden;
}

/* --- Seal (center emblem) --- */
.hero-seal {
    width: clamp(120px, 18vh, 200px);
    height: clamp(120px, 18vh, 200px);
    border-radius: 50%;
    border: 2px solid rgba(212, 160, 74, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: clamp(12px, 2vh, var(--space-xl));
    animation: sealPulse 6s ease-in-out infinite;
    flex-shrink: 0;
}

/* --- Vedic glowing button state --- */
.hero-seal--btn {
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.3s ease;
    box-shadow:
        0 0 15px rgba(212, 160, 74, 0.08),
        0 0 40px rgba(212, 160, 74, 0.04),
        inset 0 0 20px rgba(212, 160, 74, 0.03);
}

.hero-seal--btn:hover {
    border-color: rgba(212, 160, 74, 0.35);
    box-shadow:
        0 0 20px rgba(212, 160, 74, 0.2),
        0 0 60px rgba(212, 160, 74, 0.1),
        0 0 100px rgba(200, 117, 51, 0.06),
        inset 0 0 30px rgba(212, 160, 74, 0.06);
    transform: scale(1.04);
}

.hero-seal--btn:active {
    transform: scale(0.98);
    box-shadow:
        0 0 12px rgba(212, 160, 74, 0.25),
        0 0 40px rgba(212, 160, 74, 0.12),
        inset 0 0 25px rgba(212, 160, 74, 0.08);
}

.hero-seal::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 1px solid rgba(212, 160, 74, 0.08);
}

.hero-seal::after {
    content: '';
    position: absolute;
    inset: 10px;
    border-radius: 50%;
    border: 1px dashed rgba(212, 160, 74, 0.12);
    animation: sealRotate 30s linear infinite;
}

.hero-seal-svg {
    width: clamp(60px, 10vh, 90px);
    height: clamp(60px, 10vh, 90px);
    z-index: 1;
    filter: drop-shadow(0 0 15px rgba(212, 160, 74, 0.3));
}

/* --- Orbit ring --- */
.hero-orbit-ring {
    position: absolute;
    inset: -20px;
    animation: sealRotate 20s linear infinite reverse;
}

.hero-orbit-ring svg {
    width: 100%;
    height: 100%;
}

/* --- Title block --- */
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 5vw, 56px);
    font-weight: 900;
    letter-spacing: 6px;
    line-height: 1.1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--glow-amber) 0%, #f0d78c 30%, var(--glow-amber) 60%, var(--glow-copper) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 40px rgba(212, 160, 74, 0.2));
}

.hero-subtitle {
    font-family: var(--font-ui);
    font-size: clamp(14px, 2vw, 20px);
    font-weight: 500;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: clamp(12px, 2vh, 24px);
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: clamp(12px, 1.5vw, 15px);
    font-weight: 300;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: clamp(16px, 3vh, 36px);
}

.hero-tagline em {
    color: var(--glow-amber);
    font-style: normal;
    font-weight: 500;
}

/* --- Protocol badge --- */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(212, 160, 74, 0.15);
    background: rgba(212, 160, 74, 0.04);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--glow-amber-dim);
    margin-bottom: clamp(12px, 2vh, 24px);
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--glow-teal);
    box-shadow: 0 0 8px var(--glow-teal);
    animation: dotPulse 2s ease-in-out infinite;
}

/* --- Hero Button Row --- */
.hero-btn-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: nowrap;
    justify-content: center;
    max-width: 100vw;
    padding: 0 12px;
    box-sizing: border-box;
}

/* --- Earth Observatory Button --- */
.hero-earth-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px 10px 14px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(212, 160, 74, 0.18);
    background: rgba(212, 160, 74, 0.04);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.4s ease;
    margin-bottom: 0;
    overflow: visible;
    white-space: nowrap;
    flex-shrink: 1;
    min-width: 0;
}

.hero-earth-btn:hover {
    border-color: rgba(212, 160, 74, 0.4);
    background: rgba(212, 160, 74, 0.08);
    box-shadow:
        0 0 20px rgba(212, 160, 74, 0.12),
        0 0 50px rgba(212, 160, 74, 0.06),
        0 0 80px rgba(200, 117, 51, 0.04);
    transform: translateY(-2px);
}

.hero-earth-btn:active {
    transform: translateY(0) scale(0.97);
    box-shadow:
        0 0 15px rgba(212, 160, 74, 0.18),
        inset 0 0 20px rgba(212, 160, 74, 0.06);
}

.hero-earth-btn-ring {
    position: absolute;
    inset: -6px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(212, 160, 74, 0.06);
    pointer-events: none;
    animation: earthRingPulse 4s ease-in-out infinite;
}

.hero-earth-btn-icon {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 8px rgba(212, 160, 74, 0.25));
    animation: earthIconSpin 24s linear infinite;
}

.hero-earth-btn-label {
    font-family: var(--font-ui);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--glow-amber-dim);
    transition: color 0.35s ease;
}

.hero-earth-btn:hover .hero-earth-btn-label {
    color: var(--glow-amber);
}

.hero-earth-btn:hover .hero-earth-btn-icon {
    filter: drop-shadow(0 0 14px rgba(212, 160, 74, 0.45));
}

@keyframes earthRingPulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.03); }
}

@keyframes earthIconSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* --- Reception Button (Blood Red Glow) --- */
.hero-reception-btn {
    border-color: rgba(180, 30, 30, 0.22);
    background: rgba(180, 30, 30, 0.05);
    position: relative;
}
.hero-reception-btn::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-pill);
    background: radial-gradient(ellipse at center, rgba(220, 38, 38, 0.08), transparent 70%);
    pointer-events: none;
    animation: receptionBloodGlow 3s ease-in-out infinite;
}
@keyframes receptionBloodGlow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}
.hero-reception-btn:hover {
    border-color: rgba(220, 38, 38, 0.55);
    background: rgba(220, 38, 38, 0.1);
    box-shadow:
        0 0 20px rgba(220, 38, 38, 0.18),
        0 0 50px rgba(180, 30, 30, 0.1),
        0 0 80px rgba(153, 27, 27, 0.06);
}
.hero-reception-btn:active {
    box-shadow:
        0 0 15px rgba(220, 38, 38, 0.25),
        inset 0 0 20px rgba(180, 30, 30, 0.08);
}
.hero-reception-ring {
    border-color: rgba(220, 38, 38, 0.08) !important;
    animation: receptionRingPulse 3.5s ease-in-out infinite !important;
}
@keyframes receptionRingPulse {
    0%, 100% { opacity: 0.3; box-shadow: 0 0 8px rgba(220,38,38,0.05); }
    50% { opacity: 1; box-shadow: 0 0 20px rgba(220,38,38,0.12); }
}
.hero-reception-btn .hero-earth-btn-label {
    color: rgba(220, 38, 38, 0.55);
}
.hero-reception-btn:hover .hero-earth-btn-label {
    color: rgba(239, 68, 68, 0.9);
    text-shadow: 0 0 12px rgba(220, 38, 38, 0.3);
}
.hero-reception-icon {
    animation: receptionPulse 3s ease-in-out infinite !important;
    filter: drop-shadow(0 0 8px rgba(220, 38, 38, 0.3));
}
.hero-reception-btn:hover .hero-reception-icon {
    filter: drop-shadow(0 0 16px rgba(220, 38, 38, 0.55));
}
@keyframes receptionPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* --- Register / Login Button (Teal) --- */
.hero-reglogin-btn {
    border-color: rgba(45, 212, 168, 0.18);
    background: rgba(45, 212, 168, 0.04);
}
.hero-reglogin-btn:hover {
    border-color: rgba(45, 212, 168, 0.45);
    background: rgba(45, 212, 168, 0.08);
    box-shadow:
        0 0 20px rgba(45, 212, 168, 0.12),
        0 0 50px rgba(45, 212, 168, 0.06),
        0 0 80px rgba(45, 212, 168, 0.04);
}
.hero-reglogin-btn:active {
    box-shadow:
        0 0 15px rgba(45, 212, 168, 0.18),
        inset 0 0 20px rgba(45, 212, 168, 0.06);
}
.hero-reglogin-ring {
    border-color: rgba(45, 212, 168, 0.06) !important;
}
.hero-reglogin-btn .hero-earth-btn-label {
    color: rgba(45, 212, 168, 0.5);
}
.hero-reglogin-btn:hover .hero-earth-btn-label {
    color: rgba(45, 212, 168, 0.9);
}
.hero-reglogin-icon {
    animation: regloginPulse 4s ease-in-out infinite !important;
    filter: drop-shadow(0 0 8px rgba(45, 212, 168, 0.25));
}
.hero-reglogin-btn:hover .hero-reglogin-icon {
    filter: drop-shadow(0 0 14px rgba(45, 212, 168, 0.5));
}
@keyframes regloginPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* --- Spirituality Button (Saffron / Sacred) --- */
.hero-spirit-btn {
    border-color: rgba(255, 140, 50, 0.18);
    background: rgba(255, 140, 50, 0.04);
    position: relative;
}
.hero-spirit-btn::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-pill);
    background: radial-gradient(ellipse at center, rgba(255, 140, 50, 0.06), transparent 70%);
    pointer-events: none;
    animation: spiritAura 5s ease-in-out infinite;
}
@keyframes spiritAura {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}
.hero-spirit-btn:hover {
    border-color: rgba(255, 140, 50, 0.45);
    background: rgba(255, 140, 50, 0.08);
    box-shadow:
        0 0 20px rgba(255, 140, 50, 0.12),
        0 0 50px rgba(224, 101, 24, 0.06),
        0 0 80px rgba(255, 140, 50, 0.04);
}
.hero-spirit-btn:active {
    box-shadow:
        0 0 15px rgba(255, 140, 50, 0.2),
        inset 0 0 20px rgba(255, 140, 50, 0.06);
}
.hero-spirit-ring {
    border-color: rgba(255, 140, 50, 0.06) !important;
}
.hero-spirit-btn .hero-earth-btn-label {
    color: rgba(255, 140, 50, 0.5);
}
.hero-spirit-btn:hover .hero-earth-btn-label {
    color: rgba(255, 160, 70, 0.9);
    text-shadow: 0 0 10px rgba(255, 140, 50, 0.25);
}
.hero-spirit-icon {
    animation: spiritFloat 6s ease-in-out infinite !important;
    filter: drop-shadow(0 0 8px rgba(255, 140, 50, 0.25));
}
.hero-spirit-btn:hover .hero-spirit-icon {
    filter: drop-shadow(0 0 14px rgba(255, 140, 50, 0.5));
}
@keyframes spiritFloat {
    0%, 100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.04) translateY(-2px); }
}

/* --- Neural Architecture Button --- */
.hero-neural-btn {
    border-color: rgba(220, 60, 60, 0.18);
    background: rgba(220, 60, 60, 0.04);
}
.hero-neural-btn:hover {
    border-color: rgba(220, 60, 60, 0.4);
    background: rgba(220, 60, 60, 0.08);
    box-shadow:
        0 0 20px rgba(220, 60, 60, 0.12),
        0 0 50px rgba(220, 60, 60, 0.06),
        0 0 80px rgba(212, 160, 74, 0.04);
}
.hero-neural-btn:active {
    box-shadow:
        0 0 15px rgba(220, 60, 60, 0.18),
        inset 0 0 20px rgba(220, 60, 60, 0.06);
}
.hero-neural-ring {
    border-color: rgba(220, 60, 60, 0.06) !important;
}
.hero-neural-btn .hero-earth-btn-label {
    color: rgba(220, 60, 60, 0.45);
}
.hero-neural-btn:hover .hero-earth-btn-label {
    color: rgba(220, 60, 60, 0.85);
}
.hero-neural-icon {
    animation: neuralPulse 4s ease-in-out infinite !important;
    filter: drop-shadow(0 0 8px rgba(220, 60, 60, 0.25));
}
.hero-neural-btn:hover .hero-neural-icon {
    filter: drop-shadow(0 0 14px rgba(220, 60, 60, 0.45));
}
@keyframes neuralPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

/* --- Scroll indicator (hidden in single-window mode) --- */
.hero-scroll {
    display: none;
}

.hero-scroll-line {
    display: none;
}

/* --- Hero Buttons Responsive --- */
@media (max-width: 768px) {
    .hero-btn-row {
        flex-wrap: wrap;
        gap: 10px;
    }
    .hero-earth-btn {
        padding: 10px 16px 10px 14px;
        gap: 8px;
    }
    .hero-earth-btn-icon {
        width: 24px;
        height: 24px;
    }
    .hero-earth-btn-label {
        font-size: 10px;
        letter-spacing: 1.5px;
    }
}
@media (max-width: 480px) {
    .hero-btn-row {
        flex-direction: column;
        gap: 8px;
    }
    .hero-earth-btn {
        width: 100%;
        max-width: 260px;
        justify-content: center;
    }
}