/* TAHABIL LIMITED - DESIGN SYSTEM */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Noto+Sans+Bengali:wght@400;500;600;700;800;900&display=swap');

:root {
    --navy:        #1B2B6B;
    --navy-dark:   #0F1A45;
    --navy-light:  #2A3F8F;
    --gold:        #F5A623;
    --gold-dark:   #D4891A;
    --gold-light:  #FBBF4A;
    --bg:          #F8F9FD;
    --bg-alt:      #F0F2FA;
    --surface:     #FFFFFF;
    --border:      #E5E7EB;
    --border-soft: #F3F4F6;
    --text-dark:   #0F172A;
    --text-main:   #1F2937;
    --text-muted:  #64748B;
    --text-light:  #94A3B8;
    --shadow-sm:   0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:   0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg:   0 10px 30px rgba(0,0,0,0.08);
    --shadow-xl:   0 20px 50px rgba(27,43,107,0.12);
    --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px;
}

* {
    font-family: 'Noto Sans Bengali', 'Inter', 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
}

/* Typography */
.h-display { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: 900; line-height: 1.1; letter-spacing: -0.02em; }
.h-1       { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 900; line-height: 1.2; letter-spacing: -0.02em; }
.h-2       { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; line-height: 1.25; letter-spacing: -0.01em; }
.h-3       { font-size: clamp(1.25rem, 2.5vw, 1.5rem); font-weight: 800; line-height: 1.3; }
.h-4       { font-size: 1.125rem; font-weight: 700; line-height: 1.4; }
.text-lead { font-size: 1.125rem; font-weight: 500; line-height: 1.65; color: var(--text-muted); }
.text-body { font-size: 0.9375rem; font-weight: 500; line-height: 1.7; }
.text-small{ font-size: 0.8125rem; font-weight: 500; line-height: 1.5; }
.text-xs-u { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; padding: 0.875rem 1.75rem; border-radius: var(--r-md);
    font-weight: 800; font-size: 0.9375rem; transition: all 0.2s ease;
    border: 2px solid transparent; cursor: pointer; white-space: nowrap;
    text-decoration: none;
}
.btn-primary { background: var(--gold); color: var(--navy); box-shadow: 0 4px 14px rgba(245,166,35,0.35); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,166,35,0.45); }
.btn-secondary { background: var(--navy); color: white; box-shadow: 0 4px 14px rgba(27,43,107,0.25); }
.btn-secondary:hover { background: var(--navy-light); transform: translateY(-2px); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.3); color: white; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); }
.btn-ghost { background: transparent; color: var(--navy); }
.btn-ghost:hover { background: var(--bg-alt); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8125rem; border-radius: var(--r-sm); }
.btn-lg { padding: 1.125rem 2.25rem; font-size: 1rem; }

/* Cards */
.card {
    background: var(--surface); border-radius: var(--r-lg);
    border: 1px solid var(--border-soft); padding: 1.5rem;
    transition: all 0.25s ease;
}
.card-hover:hover {
    border-color: var(--border); box-shadow: var(--shadow-lg); transform: translateY(-4px);
}

/* Highlight */
.highlight-text { position: relative; display: inline-block; color: var(--gold); }
.highlight-text::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 100%; height: 12px; background: var(--gold);
    opacity: 0.2; z-index: -1; border-radius: 2px;
}

/* Hero gradient */
.bg-hero-gradient {
    background: linear-gradient(135deg, #1B2B6B 0%, #2A3F8F 50%, #0F1A45 100%);
    position: relative; overflow: hidden;
}
.bg-hero-gradient::before {
    content: ''; position: absolute; top: -50%; right: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(245,166,35,0.12) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
}

/* Pill badge */
.pill {
    display: inline-flex; align-items: center; gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    background: rgba(245,166,35,0.15); border: 1px solid rgba(245,166,35,0.3);
    color: #FBBF4A; font-size: 0.75rem; font-weight: 700;
    border-radius: 999px; letter-spacing: 0.02em;
}
.pill-gold { background: var(--gold); color: var(--navy); border-color: var(--gold-dark); }

/* Stat card */
.stat-card {
    background: rgba(255,255,255,0.08); backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.15); border-radius: var(--r-lg);
    padding: 1.5rem; transition: all 0.3s ease;
}
.stat-card:hover { background: rgba(255,255,255,0.13); border-color: rgba(245,166,35,0.3); transform: translateY(-4px); }
.stat-value { font-size: 2rem; font-weight: 900; color: var(--gold); line-height: 1; margin-bottom: 0.375rem; }
.stat-label { font-size: 0.8125rem; font-weight: 600; color: rgba(255,255,255,0.75); }

/* Feature icon */
.feature-icon {
    width: 56px; height: 56px; border-radius: var(--r-md);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: white; box-shadow: var(--shadow-md); transition: all 0.3s ease;
    margin-bottom: 1rem;
}
.feature-icon:hover { transform: scale(1.1); }

/* Step number */
.step-number {
    position: absolute; top: -0.75rem; right: -0.75rem;
    width: 2rem; height: 2rem; background: var(--gold); color: var(--navy);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 900; font-size: 0.875rem; border: 3px solid white; box-shadow: var(--shadow-md);
}

/* Sections */
.section    { padding: 5rem 0; }
.section-sm { padding: 3.5rem 0; }
.section-lg { padding: 6.5rem 0; }
.container-main { max-width: 1280px; margin: 0 auto; padding: 0 1.25rem; }

/* Animations */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.animate-fade-up { animation: fadeUp 0.6s ease forwards; }

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* Mobile */
@media (max-width: 768px) {
    .section { padding: 3rem 0; }
    .section-lg { padding: 4rem 0; }
    .btn { padding: 0.75rem 1.5rem; font-size: 0.875rem; }
    .h-display { font-size: 2.2rem; }
}