:root {
    --bg-color: #F9FAFB;
    --surface-color: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --primary: #0F172A; /* Deep Navy/Charcoal */
    --primary-hover: #1E293B;
    --accent: #10B981; /* Tasteful Green */
    --accent-light: #D1FAE5;
    --border: #E5E7EB;
    --radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1 { font-size: 2.5rem; font-weight: 700; line-height: 1.1; margin-bottom: 1rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 1rem; }
.subtitle { font-size: 1.125rem; color: var(--text-muted); margin-bottom: 2rem; line-height: 1.6; }
.text-center { text-align: center; }
.mt-4 { margin-top: 1.5rem; }

/* Nav */
.top-nav {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; color: var(--primary); }

.lang-switcher button {
    background: none; border: none; font-family: var(--font);
    font-size: 0.875rem; color: var(--text-muted); cursor: pointer;
    padding: 0.25rem 0.5rem; font-weight: 500;
}
.lang-switcher button.active { color: var(--primary); font-weight: 600; }

/* Layout */
.split-layout {
    max-width: 1200px; margin: 2rem auto; padding: 0 1.5rem;
    display: grid; grid-template-columns: 1fr; gap: 2rem;
}

@media (min-width: 992px) {
    .split-layout { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; margin: 4rem auto; }
    .hero-section { position: sticky; top: 6rem; }
}

/* Badges & Pills */
.badge {
    display: inline-block; padding: 0.25rem 0.75rem; border-radius: 99px;
    font-size: 0.75rem; font-weight: 600; margin-bottom: 1rem;
}
.badge-premium { background: var(--accent-light); color: #065F46; }

.trust-pills { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 2.5rem; }
.pill { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--text-muted); font-weight: 500; }
.pill svg { width: 1.25rem; height: 1.25rem; color: var(--accent); }

/* Steps Row */
.how-it-works { background: white; padding: 1.5rem; border-radius: var(--radius); border: 1px solid var(--border); }
.steps-row { display: flex; align-items: center; justify-content: space-between; }
.step-item { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; font-size: 0.75rem; font-weight: 500; text-align: center; color: var(--text-muted); }
.step-num { width: 24px; height: 24px; background: var(--bg-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 600; color: var(--primary); }
.step-line { flex: 1; height: 1px; background: var(--border); margin: 0 0.5rem; position: relative; top: -10px; }

/* Form Card */
.form-card {
    background: var(--surface-color); padding: 2rem;
    border-radius: 16px; box-shadow: var(--shadow-lg); border: 1px solid var(--border);
}

.stepper-indicator { margin-bottom: 2rem; }
.progress-bar { width: 100%; height: 4px; background: var(--bg-color); border-radius: 2px; overflow: hidden; margin-bottom: 0.75rem; }
.progress-fill { height: 100%; background: var(--accent); width: 20%; transition: width 0.3s ease; }
.step-label { font-size: 0.875rem; font-weight: 600; color: var(--primary); }

.form-step { display: none; animation: fadeIn 0.4s ease forwards; }
.form-step.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Inputs */
.input-group { margin-bottom: 1.25rem; }
label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--text-main); margin-bottom: 0.5rem; }
input, select, textarea {
    width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border);
    border-radius: 8px; font-family: var(--font); font-size: 1rem;
    background: #fff; transition: border-color 0.2s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .grid-2 { grid-template-columns: 1fr; } }
.helper-text { font-size: 0.75rem; color: var(--text-muted); margin-top: -0.5rem; margin-bottom: 1rem; }

/* Buttons */
.btn {
    display: inline-flex; justify-content: center; align-items: center;
    padding: 0.875rem 1.5rem; font-size: 1rem; font-weight: 600; font-family: var(--font);
    border-radius: 8px; cursor: pointer; transition: all 0.2s; border: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-color); color: var(--primary); }
.btn-row { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1rem; }
.btn-row .btn { flex: 1; }
.full-width { width: 100%; }

/* OTP & Success */
.otp-container { text-align: center; }
.otp-inputs { display: flex; justify-content: center; gap: 0.5rem; margin: 1.5rem 0; }
.otp-digit { width: 3rem; height: 3.5rem; text-align: center; font-size: 1.5rem; font-weight: 600; border-radius: 8px; }
.timer { font-size: 0.875rem; font-weight: 600; color: #D97706; margin-bottom: 1rem; }
.error-msg { color: #DC2626; font-size: 0.875rem; min-height: 1.25rem; margin-bottom: 1rem; }

.success-icon {
    width: 64px; height: 64px; background: var(--accent-light); color: var(--accent);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.5rem;
}
.success-icon svg { width: 32px; height: 32px; }
.req-id-box { background: var(--bg-color); padding: 1rem; border-radius: 8px; margin-top: 1.5rem; font-family: monospace; font-size: 1.125rem; }

/* Mobile Bottom Sheet Feel */
@media (max-width: 991px) {
    .split-layout { margin: 1rem auto; gap: 1rem; }
    h1 { font-size: 2rem; }
    .form-card { border-radius: 20px; border: none; padding: 1.5rem; background: var(--surface-color); }
}