/* ========================================
   Health Calculator - Glass Theme CSS
   Colors: Red, Rose, Coral, Orange, Gold
   ======================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
    --primary: #e11d48;
    --primary-dark: #be123c;
    --primary-light: #fecdd3;
    --secondary: #f43f5e;
    --accent: #fb923c;
    --accent-gold: #fbbf24;
    --bg-dark: #0f0f0f;
    --bg-card: rgba(255, 255, 255, 0.08);
    --bg-card-hover: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.15);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --shadow-color: rgba(225, 29, 72, 0.3);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a2e 50%, #16213e 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background Gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(225, 29, 72, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(251, 146, 60, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(244, 63, 94, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ========================================
   Header
   ======================================== */
header {
    background: rgba(15, 15, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-section img {
    height: 45px;
    width: auto;
}

.logo-section h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Navigation */
nav ul {
    list-style: none;
    display: flex;
    gap: 0.5rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

nav a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

/* ========================================
   Main Content
   ======================================== */
main {
    min-height: calc(100vh - 180px);
    padding: 2rem 0;
    position: relative;
    z-index: 1;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ========================================
   Page Title
   ======================================== */
.page-title {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

/* ========================================
   Calculator Grid
   ======================================== */
.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* ========================================
   Glass Card
   ======================================== */
.calculator-card,
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.calculator-card:hover,
.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.calculator-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.calculator-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.calculator-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

/* ========================================
   Buttons
   ======================================== */
.btn,
button,
.calculator-card a {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 10px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover,
button:hover,
.calculator-card a:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-card);
}

/* ========================================
   Form Elements
   ======================================== */
input,
select,
textarea {
    width: 100%;
    padding: 0.9rem 1.2rem;
    margin-bottom: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-secondary);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

select option {
    background: #1a1a2e;
    color: var(--text-primary);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ========================================
   Result Box
   ======================================== */
.result-box,
.result {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.result-box h3,
.result h3 {
    color: #22c55e;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* ========================================
   Ad Sections
   ======================================== */
.ad-header,
.ad-footer {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
}

/* ========================================
   Footer
   ======================================== */
footer {
    background: rgba(15, 15, 15, 0.9);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    padding: 3rem 0 2rem;
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-section ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ========================================
   Voice Assistant Button
   ======================================== */
.voice-btn {
    padding: 1rem 2rem;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.voice-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ========================================
   Modal
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--primary);
}

/* ========================================
   Quick Buttons
   ======================================== */
.quick-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quick-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* ========================================
   Selection
   ======================================== */
::selection {
    background: var(--primary);
    color: white;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav a {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .hero {
        padding: 2rem 1.5rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-card {
        padding: 1.25rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }