/* Mobile-First Responsive Styles */
:root {
    --primary: #3a86ff;
    --primary-dark: #2667cc;
    --accent: #ff006e;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --light: #f8fafc;
    --gray: #94a3b8;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-padding: 1rem;
    --border-radius: 0.5rem;
}

/* Base Mobile Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'SF Pro Display', -apple-system, Arial, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Typography */
h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 0.875rem;
}

p {
    margin-bottom: 1rem;
}

/* Layout */
.container {
    width: 100%;
    padding: 0 var(--container-padding);
    margin: 0 auto;
    max-width: 100%;
}

/* Navigation */
.nav-toggle {
    display: block;
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
}

.nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark);
    z-index: 999;
    padding: 5rem 2rem 2rem;
    overflow-y: auto;
}

.nav-menu.active {
    display: block;
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li {
    margin-bottom: 1rem;
}

.nav-menu a {
    color: var(--light);
    text-decoration: none;
    font-size: 1.25rem;
    display: block;
    padding: 0.5rem 0;
    transition: var(--transition);
}

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

/* Cards and Containers */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 2rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    width: 100%;
    max-width: 300px;
    margin: 0.5rem 0;
    text-align: center;
}

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

/* Forms */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--light);
    font-size: 1rem;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Media Queries */
/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
    
    .btn {
        width: auto;
        margin: 0.5rem;
    }
    
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    :root {
        --container-padding: 2rem;
    }
    
    .container {
        max-width: 720px;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: block;
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        padding: 0;
    }
    
    .nav-menu ul {
        display: flex;
        justify-content: flex-end;
        gap: 1.5rem;
    }
    
    .nav-menu li {
        margin: 0;
    }
    
    .nav-menu a {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
    
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
    
    .grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Project Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

/* Progress Ring */
.progress-ring {
    width: 120px;
    height: 120px;
    margin: 0 auto;
}

/* Widgets */
.widget {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Responsive Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Mobile Hide */
.mobile-hide {
    display: none;
}

@media (min-width: 768px) {
    .mobile-hide {
        display: block;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
}

/* Animation Delays */
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}