/* Modern Portfolio Design System */
/* Created for Yvonne Mwende - Founder, GluCorp */

:root {
    --transition-speed: 0.3s;
    --maternal-coral: #E63946;
    --maternal-dark: #C1121F;
    --tech-teal: #0FA3B1;
    --tech-dark: #0D7C87;
    --accent-gold: #F4A261;
    --dark-bg: #1A1A2E;
    --light-bg: #F8F9FA;
    --text-primary: #2D3748;
    --text-secondary: #718096;
    --card-glass-bg: rgba(255, 255, 255, 0.05);
    --card-glass-border: rgba(255, 255, 255, 0.1);
    --shadow-elevation-low: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-elevation-medium: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-elevation-high: 0 16px 48px rgba(0, 0, 0, 0.16);
}

[data-bs-theme="light"] {
    --card-glass-bg: rgba(255, 255, 255, 0.7);
    --card-glass-border: rgba(0, 0, 0, 0.08);
}

* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    letter-spacing: -0.02em;
    font-weight: 700;
}

body {
    transition: background-color var(--transition-speed) ease;
    line-height: 1.7;
}

/* Modern Navbar */
.navbar {
    backdrop-filter: blur(10px);
    background: var(--card-glass-bg) !important;
    border-bottom: 1px solid var(--card-glass-border);
    padding: 1rem 0;
}

.navbar-brand img {
    border-radius: 50%;
    border: 2px solid var(--maternal-coral);
    transition: transform 0.3s ease;
}

.navbar-brand img:hover {
    transform: scale(1.1);
}

.nav-link {
    position: relative;
    transition: color var(--transition-speed) ease;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--maternal-coral), var(--tech-teal));
    transition: width var(--transition-speed) ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* Hero Section - Modern & Clean */
.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 80px 0 60px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(230, 57, 70, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(15, 163, 177, 0.05) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--maternal-coral), var(--tech-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Button Styles */
.btn-modern-primary {
    background: linear-gradient(135deg, var(--maternal-coral), var(--maternal-dark));
    color: white;
    border: none;
    padding: 0.875rem 2rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-modern-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-modern-primary:hover::before {
    left: 100%;
}

.btn-modern-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
}

.btn-modern-outline {
    background: transparent;
    color: var(--bs-body-color);
    border: 2px solid var(--card-glass-border);
    padding: 0.875rem 2rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.btn-modern-outline:hover {
    background: var(--card-glass-bg);
    border-color: var(--maternal-coral);
    color: var(--maternal-coral);
    transform: translateY(-2px);
}

/* Glassmorphic Cards */
.card-glass {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-glass-border);
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-elevation-low);
}

.card-glass:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-elevation-high);
    border-color: rgba(230, 57, 70, 0.2);
}

/* Certificate Cards - Premium Design */
.certificate-card {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-glass-border);
    border-radius: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #8C1515, #B1040E);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-card:hover::before {
    opacity: 1;
}

.certificate-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(140, 21, 21, 0.15);
    border-color: rgba(140, 21, 21, 0.2);
}

.certificate-badge {
    background: linear-gradient(135deg, #8C1515 0%, #B1040E 100%);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    display: inline-block;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(140, 21, 21, 0.3);
}

/* Expertise Cards */
.expertise-card {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-glass-border);
    border-radius: 20px;
    padding: 2.5rem 1.5rem;
    transition: all 0.4s ease;
    height: 100%;
}

.expertise-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-elevation-medium);
}

.expertise-card i {
    transition: transform 0.3s ease;
}

.expertise-card:hover i {
    transform: scale(1.15) rotate(5deg);
}

/* Section Spacing */
section {
    padding: 80px 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: none;
    z-index: 1000;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--maternal-coral), var(--maternal-dark));
    border: none;
    box-shadow: 0 4px 14px rgba(230, 57, 70, 0.4);
    transition: all 0.3s ease;
}

.scroll-to-top.visible {
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.5);
}

.rough-annotation {
    position: relative;
    display: inline-block;
}

/* Footer */
.footer {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--card-glass-border);
    padding: 2rem 0;
    margin-top: 4rem;
}

.social-links a {
    color: var(--bs-body-color);
    margin: 0 12px;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--card-glass-bg);
    border: 1px solid var(--card-glass-border);
}

.social-links a:hover {
    color: var(--maternal-coral);
    transform: translateY(-3px);
    border-color: var(--maternal-coral);
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.2);
}

/* Maternal Health Color Accent */
.maternal-accent {
    color: var(--maternal-coral);
    font-weight: 700;
}

.maternal-bg {
    background: linear-gradient(135deg, rgba(230, 57, 70, 0.03) 0%, rgba(15, 163, 177, 0.03) 100%);
    position: relative;
}

/* Problem/Solution Cards */
.impact-card {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-glass-border);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.impact-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    transition: width 0.3s ease;
}

.impact-card.problem::before {
    background: linear-gradient(180deg, var(--maternal-coral), var(--maternal-dark));
}

.impact-card.solution::before {
    background: linear-gradient(180deg, #16a085, #0FA3B1);
}

.impact-card:hover {
    transform: translateX(8px);
}

.impact-card:hover::before {
    width: 6px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Dark mode toggle button */
#darkModeIcon {
    color: var(--bs-body-color);
    font-size: 1.25rem;
    transition: all 0.3s ease;
    padding: 0.5rem;
}

#darkModeIcon:hover {
    color: var(--maternal-coral);
    transform: rotate(20deg);
}

/* Responsive Typography */
@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }

    .hero-section {
        min-height: 70vh;
    }

    .btn-modern-primary,
    .btn-modern-outline {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
}