/* 
   David Jumbi Portfolio - Design System
   Theme: Light, Modern, Professional
*/

:root {
    /* Colors */
    --primary: #0984E3;
    /* Professional Blue */
    --primary-dark: #006eb3;
    --text-dark: #2D3436;
    --text-light: #636E72;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border: #DFE6E9;

    /* Spacing */
    --container: 1100px;
    --header-height: 80px;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.7;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: 0.3s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

.text-center {
    text-align: center;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    margin-bottom: 50px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* Header */
header {
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background:
        radial-gradient(circle at 10% 20%, rgba(45, 152, 218, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(75, 123, 236, 0.1) 0%, transparent 20%);
    padding-top: var(--header-height);
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(45, 152, 218, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 152, 218, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -1;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(245, 247, 250, 0.9), rgba(195, 207, 226, 0.9)), url('../assets/images/hero_bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding-top: var(--header-height);
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 100%;
}

.hero-image-box {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img-wrapper {
    position: relative;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    animation: float 6s ease-in-out infinite;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid rgba(255, 255, 255, 0.8);
}

.floating-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: float 5s ease-in-out infinite;
    z-index: 3;
}

.icon-1 {
    top: 20px;
    left: 0;
    animation-delay: 0s;
}

.icon-2 {
    bottom: 40px;
    right: 20px;
    animation-delay: 1s;
}

.icon-3 {
    top: 40%;
    right: -20px;
    animation-delay: 2s;
    font-size: 1.2rem;
    width: 50px;
    height: 50px;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

@media(max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero-image-box {
        margin-top: 50px;
    }

    .hero-img-wrapper {
        width: 280px;
        height: 280px;
    }
}

.greeting {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 10px;
    display: block;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary);
    color: white;
    border-radius: 5px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(9, 132, 227, 0.3);
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    color: white;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    transition: 0.3s;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.skill-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.skill-list li {
    margin-bottom: 8px;
    color: var(--text-light);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-list li::before {
    content: '\2022';
    color: var(--primary);
    font-weight: bold;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    padding-left: 60px;
    position: relative;
    margin-bottom: 50px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid var(--primary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-bottom: 5px;
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 500;
}

/* Contact */
.contact-section {
    background: var(--bg-light);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.contact-card {
    text-align: center;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    min-width: 250px;
}

.contact-icon-box {
    width: 60px;
    height: 60px;
    background: rgba(9, 132, 227, 0.1);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
}

/* Footer */
footer {
    background: white;
    padding: 40px 0;
    text-align: center;
    color: var(--text-light);
    border-top: 1px solid var(--border);
}

/* Mobile */
.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media(max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-item::before {
        left: 1px;
    }
}