/* ============================================================
   Universal Business Systems / Voipro — Site Stylesheet
   ============================================================ */

:root {
    --navy: #0F2D4A;
    --navy-light: #1A3F62;
    --blue: #0EA5E9;
    --blue-dark: #0284C7;
    --green: #10B981;
    --gray: #64748B;
    --gray-light: #F1F5F9;
    --white: #FFFFFF;
    --text: #0F2D4A;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --radius: 10px;
    --shadow: 0 2px 16px rgba(15,45,74,0.08);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--white);
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
img { max-width: 100%; }

/* ============ HEADER ============ */
header {
    position: sticky;
    top: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 0 2rem;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--navy);
    text-decoration: none;
}

.logo-badge {
    background: var(--navy);
    color: var(--white);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

nav { display: flex; gap: 0.25rem; align-items: center; }

nav a {
    padding: 6px 14px;
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.15s;
    text-decoration: none;
}

nav a:hover { background: var(--gray-light); color: var(--navy); }
nav a.active { color: var(--navy); background: var(--gray-light); }

.nav-cta {
    background: var(--blue) !important;
    color: var(--white) !important;
    padding: 8px 18px !important;
    border-radius: 8px !important;
    margin-left: 0.5rem;
}
.nav-cta:hover { background: var(--blue-dark) !important; }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--navy);
    padding: 4px;
}

/* ============ HERO ============ */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    padding: 80px 2rem;
}

.hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-eyebrow {
    display: inline-block;
    background: rgba(14,165,233,0.2);
    color: var(--blue);
    border: 1px solid rgba(14,165,233,0.3);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.hero h1 {
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.hero h1 span { color: var(--blue); }

.hero p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.15s;
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--blue);
    color: var(--white);
}
.btn-primary:hover { background: var(--blue-dark); color: var(--white); }

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); color: var(--white); }

.btn-dark {
    background: var(--navy);
    color: var(--white);
}
.btn-dark:hover { background: var(--navy-light); color: var(--white); }

/* Hero call card */
.hero-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    padding: 1.75rem;
}

.hero-card-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.5);
    margin-bottom: 1rem;
}

.call-demo {
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.call-demo-number {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.call-demo-sub {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.55);
}

.transcript-line {
    display: flex;
    gap: 10px;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
}

.transcript-role {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
    align-self: flex-start;
    margin-top: 2px;
}

.role-ai {
    background: rgba(14,165,233,0.25);
    color: var(--blue);
}

.role-caller {
    background: rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.7);
}

.transcript-text { color: rgba(255,255,255,0.85); line-height: 1.5; }

/* ============ SECTIONS ============ */
.section { padding: 80px 2rem; }
.section-alt { background: var(--gray-light); }

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.section-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blue);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 3rem;
}

/* ============ SERVICES GRID ============ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.service-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--blue);
    transform: translateY(-2px);
    color: inherit;
}

.service-icon {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.service-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 0.4rem;
}

.service-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ============ AI SECTION ============ */
.ai-section {
    background: var(--navy);
    color: var(--white);
    padding: 80px 2rem;
}

.ai-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.ai-section .section-label { color: var(--blue); }

.ai-section .section-title { color: var(--white); }

.ai-section .section-sub { color: rgba(255,255,255,0.7); margin-bottom: 2rem; }

.feature-list { list-style: none; margin-bottom: 2rem; }

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.85);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.feature-list li:last-child { border-bottom: none; }

.feature-check {
    color: var(--green);
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.demo-box {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    padding: 2rem;
}

.demo-number-big {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin: 0.5rem 0;
}

.demo-desc {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.55);
    margin-bottom: 1.5rem;
}

/* ============ ABOUT ============ */
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--navy);
    line-height: 1;
    margin-bottom: 0.4rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-points { list-style: none; }

.about-points li {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text-muted);
}

.about-points li:last-child { border-bottom: none; }

.point-icon { font-size: 1.1rem; flex-shrink: 0; }

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

.contact-info { }

.contact-item {
    display: flex;
    gap: 14px;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--gray-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
    font-weight: 600;
}

.contact-item p { font-size: 0.95rem; color: var(--navy); font-weight: 500; }
.contact-item a { color: var(--navy); }

.contact-form { }

.form-group { margin-bottom: 1rem; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--navy);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--navy);
    background: var(--white);
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--blue);
}

.form-group textarea { height: 120px; resize: vertical; }

/* ============ FOOTER ============ */
footer {
    background: var(--navy);
    color: rgba(255,255,255,0.7);
    padding: 48px 2rem 24px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.footer-brand p {
    font-size: 0.875rem;
    line-height: 1.7;
    margin-top: 0.75rem;
    max-width: 280px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 1rem;
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: 0.5rem; }

.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.15s;
}

.footer-col ul li a:hover { color: var(--white); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
}

/* ============ PAGE HERO (inner pages) ============ */
.page-hero {
    background: var(--navy);
    color: var(--white);
    padding: 60px 2rem;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.page-hero p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.75);
    max-width: 560px;
    margin: 0 auto;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .hero-inner,
    .ai-inner,
    .about-grid,
    .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }

    .hero h1 { font-size: 1.9rem; }
    .section-title { font-size: 1.6rem; }
    .stats-row { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }

    nav { display: none; }
    nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 1rem;
        gap: 0.25rem;
    }
    .mobile-menu-btn { display: block; }
    .header-inner { position: relative; }
}