/* dark e light mode*/
:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --primary: #0ea5e9;
    --primary-hover: #0284c7;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --header-gradient-1: rgba(14, 165, 233, 0.1);
    --header-gradient-2: #1e293b;
    --footer-bg: #020617;
    --border-color: rgba(255, 255, 255, 0.05);
}

body.light-theme {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --text-main: #0f172a;
    --text-muted: #475569;
    --header-gradient-1: rgba(2, 132, 199, 0.1);
    --header-gradient-2: #e2e8f0;
    --footer-bg: #e2e8f0;
    --border-color: rgba(0, 0, 0, 0.1);
}

/* geral*/
body {
    margin: 0;
    font-family: 'Inter', Arial, Helvetica, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

section {
    padding: 60px 20px;
    max-width: 1000px;
    margin: auto;
}

h2 {
    border-left: 4px solid var(--primary);
    padding-left: 15px;
    font-size: 28px;
    margin-bottom: 30px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: 0.2s;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

i {
    margin-right: 8px;
}

/* header*/
header {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--header-gradient-1), var(--bg-main)),
        radial-gradient(circle at top, var(--header-gradient-2), var(--bg-main));
    border-bottom: 1px solid var(--border-color);
    position: relative;
    transition: background 0.3s;
}

.profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary);
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

header h1 {
    margin: 0;
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(to right, #0ea5e9, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    margin-top: 15px;
    font-size: 18px;
    color: var(--text-muted);
    font-weight: 300;
}

header p i {
    margin-left: 10px;
    color: var(--primary);
}

/* botões e tags*/
.top-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 100;
}

.theme-btn {
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    font-family: inherit;
    transition: 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
}

.theme-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.header-actions {
    margin-top: 25px;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 6px;
    text-align: center;
    font-weight: 600;
    transition: 0.3s;
}

.btn:hover {
    background-color: var(--primary);
    color: #fff;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff !important;
    padding: 12px 25px;
    font-size: 16px;
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(14, 165, 233, 0.4);
}

/*skils e sobre mim*/
.about-text {
    font-size: 18px;
    color: var(--text-muted);
}

.skills-title {
    font-size: 20px;
    color: var(--text-main);
    margin-top: 30px;
}

.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.skill-tag {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: 0.3s;
}

.skill-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* cards - projetos*/
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.card {
    background-color: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.card h3 {
    margin-top: 0;
    color: var(--text-main);
    font-size: 20px;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-muted);
    flex-grow: 1;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: rgba(14, 165, 233, 0.3);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.tag {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

body.light-theme .tag {
    background-color: rgba(2, 132, 199, 0.1);
}

/* contato e footer*/
.contact-links p {
    font-size: 16px;
    color: var(--text-muted);
}

.contact-links i {
    color: var(--primary);
    font-size: 20px;
    vertical-align: middle;
}

footer {
    text-align: center;
    padding: 30px;
    background-color: var(--footer-bg);
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 14px;
    transition: background-color 0.3s;
}

/* animações*/
.fade-in {
    animation: fadeIn 1s ease-out forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}