/* ============================================
   BPO Photo Flow – Main Stylesheet
   Modular, Mobile‑First, CSS Variables
   ============================================ */

/* ---------- Variables ---------- */
:root {
    /* Colours */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #0f172a;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-white: #ffffff;

    /* Spacing (8px system) */
    --space-xs: 0.5rem;   /* 8px */
    --space-sm: 1rem;     /* 16px */
    --space-md: 1.5rem;   /* 24px */
    --space-lg: 2.5rem;   /* 40px */
    --space-xl: 4rem;     /* 64px */
    --space-xxl: 6rem;    /* 96px */

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    /* Transitions */
    --transition: 0.2s ease-in-out;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* ---------- Container ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    background: none;
}
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    border-color: var(--color-border);
    color: var(--color-text);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.04);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.site-branding a {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-secondary);
}
.site-branding .custom-logo {
    max-height: 45px;
    width: auto;
}

/* Primary Navigation */
.primary-menu {
    display: flex;
    list-style: none;
    gap: var(--space-md);
    margin: 0;
    padding: 0;
}
.primary-menu li a {
    display: block;
    padding: 0.5rem 0;
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition);
}
.primary-menu li a:hover {
    border-bottom-color: var(--color-primary);
    color: var(--color-primary);
}

.header-actions .login-btn {
    padding: 0.5rem 1.25rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
}

/* ---------- Hero ---------- */
.hero-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
    text-align: center;
}
.hero-title {
    font-size: clamp(2.2rem, 6vw, 3.8rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}
.hero-description {
    font-size: 1.2rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}
.hero-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Sections Shared ---------- */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}
.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-secondary);
}
.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-light);
}

/* ---------- Features ---------- */
.features-section {
    padding: var(--space-xxl) 0;
    background-color: var(--color-white);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}
.feature-card {
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    text-align: center;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}
.feature-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}
.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--space-xs);
}

/* ---------- About ---------- */
.about-section {
    padding: var(--space-xxl) 0;
    background-color: var(--color-bg-alt);
}
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}
.about-text h2 {
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
}
.about-text p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-light);
}
.placeholder-image {
    background: var(--color-border);
    height: 300px;
    border-radius: var(--radius-lg);
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 24 24" fill="none" stroke="%2364748b" stroke-width="1" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"/><circle cx="8.5" cy="8.5" r="1.5"/><polyline points="21 15 16 10 5 21"/></svg>');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 60px;
}

/* ---------- Services ---------- */
.services-section {
    padding: var(--space-xxl) 0;
    background-color: var(--color-white);
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}
.service-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    text-align: center;
}
.service-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}
.service-icon {
    font-size: 2.2rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

/* ---------- CTA ---------- */
.cta-section {
    padding: var(--space-xxl) 0;
    background: var(--color-secondary);
    color: var(--color-white);
    text-align: center;
}
.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}
.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
}
.cta-section .btn-primary {
    background-color: var(--color-white);
    color: var(--color-secondary);
    border-color: var(--color-white);
}
.cta-section .btn-primary:hover {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

/* ---------- Footer ---------- */
.site-footer {
    background-color: #0f172a;
    color: #cbd5e1;
    padding: var(--space-xl) 0 var(--space-md);
}
.footer-inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}
.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-lg);
}
.footer-col h4 {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}
.footer-links,
.footer-contact {
    list-style: none;
    padding: 0;
}
.footer-links li,
.footer-contact li {
    margin-bottom: var(--space-xs);
}
.footer-links a,
.footer-contact a {
    color: #cbd5e1;
}
.footer-links a:hover {
    color: var(--color-white);
}
.footer-contact i {
    width: 1.25rem;
    margin-right: var(--space-xs);
}

.social-icons {
    display: flex;
    gap: var(--space-sm);
}
.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: #cbd5e1;
    transition: all var(--transition);
}
.social-icons a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: var(--space-md);
    text-align: center;
    font-size: 0.9rem;
    color: #94a3b8;
}

.about-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}
.about-stats div {
    font-size: 1.1rem;
    color: var(--color-text-light);
}
.about-stats strong {
    display: block;
    font-size: 1.8rem;
    color: var(--color-secondary);
}

.testimonial {
    margin-bottom: var(--space-lg);
    font-style: italic;
    font-size: 1.2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.testimonial cite {
    display: block;
    margin-top: var(--space-sm);
    font-style: normal;
    font-weight: 600;
}

/* Hero trust badge */
.hero-trust {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.95rem;
    color: var(--color-text-light);
}
.hero-trust i {
    color: var(--color-primary);
    margin-right: 0.25rem;
}

/* About stats */
.about-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}
.about-stats div {
    font-size: 1.1rem;
    color: var(--color-text-light);
}
.about-stats strong {
    display: block;
    font-size: 1.8rem;
    color: var(--color-secondary);
}

/* Testimonial */
.testimonial {
    margin-bottom: var(--space-lg);
    font-style: italic;
    font-size: 1.2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255,255,255,0.85);
}
.testimonial cite {
    display: block;
    margin-top: var(--space-sm);
    font-style: normal;
    font-weight: 600;
    color: var(--color-white);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        padding: var(--space-md);
        display: none;
    }
    .main-navigation.toggled {
        display: block;
    }
    .primary-menu {
        flex-direction: column;
        gap: var(--space-xs);
    }
    .primary-menu li a {
        border-bottom: none;
        padding: 0.5rem 0;
    }

    .header-actions .login-btn span {
        display: none;
    }
    .header-actions .login-btn i {
        margin-right: 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .about-image {
        order: -1;
    }
    .placeholder-image {
        height: 200px;
    }

    .hero-title {
        font-size: 2.2rem;
    }
    .cta-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .features-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    .footer-widgets {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .social-icons {
        justify-content: center;
    }
}