/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --black:      #080808;
    --dark:       #0f0f0f;
    --surface:    #141414;
    --card:       #1a1a1a;
    --border:     #252525;
    --red:        #CC0000;
    --red-hover:  #E60000;
    --white:      #FFFFFF;
    --gray-light: #E0E0E0;
    --gray:       #8A8A8A;
    --gray-dark:  #444444;

    --font-heading: 'Rajdhani', sans-serif;
    --font-body:    'Inter', sans-serif;
    --nav-height:   72px;
    --max-width:    1200px;
    --radius:       6px;
    --transition:   0.25s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--black);
    color: var(--gray-light);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--white);
    line-height: 1.15;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.2rem; }

p { color: var(--gray-light); }
a { text-decoration: none; color: var(--red); transition: color var(--transition); }
a:hover { color: var(--red-hover); }

.text-red { color: var(--red); }
.lead { font-size: 1.05rem; font-weight: 500; color: var(--white); margin-bottom: 1.25rem; }
strong { color: var(--white); font-weight: 600; }
em { color: var(--gray-light); font-style: italic; }

/* ===== LAYOUT ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section { padding: 96px 0; }
.section-alt { background-color: var(--dark); }

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 0.875rem;
    position: relative;
    padding: 0 1.25rem;
}

.section-label::before,
.section-label::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 28px;
    height: 1px;
    background: var(--red);
    opacity: 0.5;
}
.section-label::before { right: 100%; margin-right: -1.25rem; }
.section-label::after  { left:  100%; margin-left: -1.25rem; }

.section-sub {
    max-width: 640px;
    margin: 1rem auto 0;
    color: var(--gray);
    font-size: 1rem;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--red);
    color: var(--white);
    border-color: var(--red);
}
.btn-primary:hover {
    background: var(--red-hover);
    border-color: var(--red-hover);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(204, 0, 0, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: var(--border);
}
.btn-ghost:hover {
    border-color: var(--red);
    color: var(--red);
    transform: translateY(-2px);
}

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

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(8, 8, 8, 0.8);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(8, 8, 8, 0.97);
    border-bottom-color: var(--border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--white);
}
.nav-brand:hover { color: var(--white); }

.brand-dg  { color: var(--white); }
.brand-sec { color: var(--red); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--white); }

.nav-cta {
    padding: 0.45rem 1.1rem !important;
    border: 1px solid var(--red) !important;
    border-radius: var(--radius) !important;
    color: var(--red) !important;
}
.nav-cta:hover {
    background: var(--red) !important;
    color: var(--white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition);
    transform-origin: center;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(var(--nav-height) + 3rem) 1.5rem 5rem;
    background: var(--black);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 20%, transparent 70%);
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(204,0,0,0.07) 0%, transparent 65%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 820px;
}

.hero-logo {
    margin-bottom: 2.25rem;
}
.hero-logo img {
    width: 280px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 14px;
    box-shadow:
        0 0 60px rgba(204,0,0,0.2),
        0 24px 64px rgba(0,0,0,0.6);
}

.hero-eyebrow {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 1.25rem;
}

.hero-headline { margin-bottom: 1.5rem; }

.hero-sub {
    font-size: 1.05rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
    line-height: 1.85;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-certs {
    display: flex;
    gap: 0.625rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cert-badge {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 0.35rem 0.9rem;
}

.hero-scroll {
    position: absolute;
    bottom: 2.25rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--gray-dark);
    font-size: 1.2rem;
    animation: bounce 2.2s ease-in-out infinite;
    transition: color var(--transition);
}
.hero-scroll:hover { color: var(--red); }

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%       { transform: translateX(-50%) translateY(9px); }
}

/* ===== ABOUT ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p { margin-bottom: 1rem; }

.about-differentiators {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.diff-item {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 0.875rem 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    border-left: 3px solid var(--red);
}
.diff-item i { margin-top: 0.15rem; flex-shrink: 0; }
.diff-item span { font-size: 0.93rem; color: var(--gray-light); }

.about-credentials {
    display: flex;
    flex-direction: column;
    gap: 1.125rem;
}

.cred-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.cred-card h3 {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 1rem;
}

.cred-item {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    margin-bottom: 1rem;
}
.cred-item:last-child { margin-bottom: 0; }

.cred-badge {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    background: transparent;
    color: var(--red);
    border: 2px solid var(--red);
    padding: 0.3rem 0.65rem;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
    letter-spacing: 0.08em;
}
.cred-badge.edu { padding: 0.35rem 0.65rem; font-size: 1rem; }

.cred-item div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.cred-item strong { font-size: 0.93rem; }
.cred-item span   { font-size: 0.8rem; color: var(--gray); }

.exp-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.exp-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.88rem;
    color: var(--gray-light);
    line-height: 1.5;
}
.exp-list li i { margin-top: 0.25rem; flex-shrink: 0; }

.bg-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.bg-stat {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.bg-stat:last-child { border-bottom: none; padding-bottom: 0; }

.bg-stat-num {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--red);
    line-height: 1;
}

.bg-stat-label {
    font-size: 0.85rem;
    color: var(--gray);
    line-height: 1.4;
}

/* ===== SERVICES ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.125rem;
}

.service-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.75rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--red);
    transform: scaleX(0);
    transition: transform var(--transition);
    transform-origin: left;
}
.service-card:hover {
    border-color: rgba(204,0,0,0.4);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(204,0,0,0.1);
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    font-size: 1.2rem;
    color: var(--red);
    transition: all var(--transition);
}
.service-card:hover .service-icon {
    background: var(--red);
    color: var(--white);
}

.service-card h3 { margin-bottom: 0.625rem; }
.service-card p  { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }

/* ===== METHODOLOGY ===== */
.method-intro { margin-bottom: 3.5rem; }

.method-callout {
    background: var(--surface);
    border-left: 4px solid var(--red);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 2rem 2.5rem 2rem 3.5rem;
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}
.method-callout > i {
    font-size: 1.75rem;
    color: var(--red);
    opacity: 0.25;
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
}
.method-callout p {
    font-size: 1.05rem;
    font-style: italic;
    color: var(--gray-light);
    line-height: 1.75;
}

.method-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 760px;
    margin: 0 auto 3rem;
    position: relative;
}

.method-steps::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 58px;
    bottom: 58px;
    width: 2px;
    background: linear-gradient(to bottom, var(--red) 0%, rgba(204,0,0,0.1) 100%);
}

.method-step {
    display: flex;
    gap: 2rem;
    padding: 1.5rem 0;
}

.step-number {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--red);
    background: var(--black);
    border: 2px solid var(--red);
    width: 58px;
    height: 58px;
    min-width: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.section-alt .step-number { background: var(--dark); }

.step-content { padding-top: 0.875rem; }
.step-content h3 { margin-bottom: 0.5rem; }
.step-content p  { font-size: 0.93rem; color: var(--gray); line-height: 1.75; }

.method-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

.tag {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.3rem 0.75rem;
    transition: all var(--transition);
    cursor: default;
}
.tag:hover { border-color: var(--red); color: var(--red); }

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-item { display: flex; align-items: flex-start; gap: 1rem; }
.contact-item i { font-size: 1.1rem; margin-top: 0.1rem; flex-shrink: 0; }
.contact-item div { display: flex; flex-direction: column; gap: 0.2rem; }
.contact-item strong {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray);
    font-weight: 600;
}
.contact-item span { color: var(--white); font-size: 0.93rem; }

.contact-note {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}
.contact-note p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }

.contact-form-wrap {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.25rem;
}

/* ===== FORM ===== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
}
.form-group:last-of-type { margin-bottom: 1.5rem; }

label {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray);
}
.required { color: var(--red); }

input, select, textarea {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--white);
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.93rem;
    width: 100%;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%238A8A8A'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 20px;
    padding-right: 2.5rem;
}
select option { background: var(--card); }

input:focus, select:focus, textarea:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(204,0,0,0.1);
}

input::placeholder, textarea::placeholder { color: var(--gray-dark); }
textarea { resize: vertical; min-height: 130px; }

.form-status {
    margin-top: 1rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.5;
}
.form-status.success {
    background: rgba(0,180,80,0.08);
    border: 1px solid rgba(0,180,80,0.25);
    color: #4ade80;
}
.form-status.error {
    background: rgba(204,0,0,0.08);
    border: 1px solid rgba(204,0,0,0.25);
    color: #ff7070;
}
.form-status.hidden { display: none; }

/* ===== FOOTER ===== */
.footer {
    background: var(--dark);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1.75rem;
    position: relative;
    overflow: hidden;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.footer-brand { max-width: 320px; }

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.footer-brand p { font-size: 0.875rem; color: var(--gray); line-height: 1.65; }

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    align-items: center;
}
.footer-links a {
    font-family: var(--font-heading);
    font-size: 0.83rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    text-align: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--gray-dark); }

/* ===== CIRCUIT SIDE PANELS ===== */
.circuit-side {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 25%;
    pointer-events: none;
    z-index: 0;
    mix-blend-mode: screen;
    background-image: url('../assets/circuit.svg');
    background-size: 280px 400px;
    background-repeat: repeat;
    opacity: 0.85;
}

.circuit-left {
    left: 0;
    mask-image: linear-gradient(to right, black 0%, transparent 60%);
    -webkit-mask-image: linear-gradient(to right, black 0%, transparent 60%);
}

.circuit-right {
    right: 0;
    transform: scaleX(-1);
    mask-image: linear-gradient(to right, black 0%, transparent 60%);
    -webkit-mask-image: linear-gradient(to right, black 0%, transparent 60%);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
    .about-grid   { grid-template-columns: 1fr; gap: 3rem; }
    .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
    .section { padding: 72px 0; }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0; right: 0;
        background: rgba(8,8,8,0.98);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        flex-direction: column;
        gap: 0;
        padding: 0.75rem 0 1rem;
        transform: translateY(-110%);
        transition: transform var(--transition);
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { transform: translateY(0); }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; padding: 0.875rem 1.5rem; }
    .nav-cta { margin: 0.5rem 1.5rem; display: inline-block; width: calc(100% - 3rem) !important; text-align: center; }

    .nav-toggle { display: flex; }

    .hero-logo img { width: 220px; }

    .method-steps::before { display: none; }
    .method-step { flex-direction: column; gap: 0.75rem; padding: 1.25rem 0; }
    .step-content { padding-top: 0; }

    .form-row { grid-template-columns: 1fr; }

    .footer-content { flex-direction: column; }
    .footer-links { gap: 1.25rem; }
}

@media (max-width: 520px) {
    .hero-logo img { width: 180px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 300px; justify-content: center; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-form-wrap { padding: 1.5rem; }
}