/* ========================================
   PillPilot - Smart Medication Monitoring System
   Global Styles with Glassmorphism Design
   ======================================== */

:root {
    /* Color Palette */
    --primary-gray: #c1c1c1;
    --primary-beige: #faebd7;
    --accent-blue: #44516b;
    --accent-orange: #e27740;
    
    /* Extended Colors */
    --bg-dark: #1a1a2e;
    --bg-light: #f5f5f5;
    --text-dark: #2d2d2d;
    --text-light: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Effects */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--primary-beige) 0%, #ffffff 50%, var(--bg-light) 100%);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--accent-blue);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-sm);
}

p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
    opacity: 0.9;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ========================================
   Navigation Bar
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(250, 235, 215, 0.8);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--accent-blue);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--accent-blue);
    cursor: pointer;
}

/* ========================================
   Glassmorphism Components
   ======================================== */

.glass-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md);
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
    border-color: rgba(227, 119, 64, 0.3);
}

.glass-button {
    background: rgba(227, 119, 64, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    box-shadow: 0 4px 16px rgba(227, 119, 64, 0.3);
}

.glass-button:hover {
    background: rgba(227, 119, 64, 1);
    transform: translateY(-3px);
    box-shadow: 0 6px 24px rgba(227, 119, 64, 0.4);
}

.glass-button.secondary {
    background: rgba(68, 81, 107, 0.9);
    box-shadow: 0 4px 16px rgba(68, 81, 107, 0.3);
}

.glass-button.secondary:hover {
    background: rgba(68, 81, 107, 1);
    box-shadow: 0 6px 24px rgba(68, 81, 107, 0.4);
}

/* ========================================
   Container & Layout
   ======================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
    border-radius: 2px;
}

.section-subtitle {
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   Grid Systems
   ======================================== */

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   Floating Animation Background
   ======================================== */

.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--accent-orange);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 250px;
    height: 250px;
    background: var(--accent-blue);
    top: 60%;
    right: 10%;
    animation-delay: 5s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--primary-beige);
    bottom: 10%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #2d3750 100%);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--accent-orange);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-orange);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   Animations
   ======================================== */

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in {
    animation: fadeIn 1s ease-out forwards;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out forwards;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out forwards;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(250, 235, 215, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

.text-gradient {
    background: var(--accent-orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.hidden {
    display: none;
}

.visible {
    display: block;
}