/*
 * Dr. Patrick McIntyre Medical Professional Design System
 * Clean, minimal, trustworthy aesthetic for medical professional portfolio
 */

/* ============================================
   CSS CUSTOM PROPERTIES - MEDICAL PALETTE
   ============================================ */
:root {
    /* Medical Professional Color Palette */
    --color-primary: #2C5F8D;          /* Trust blue - primary brand */
    --color-secondary: #4A90C7;        /* Lighter blue - accents */
    --color-accent: #1A4770;           /* Dark authority - headings */
    --color-bg-light: #F8F9FA;         /* Clean background */
    --color-text-dark: #333333;        /* Body text */
    --color-text-muted: #6C757D;       /* Secondary text */
    --color-border: #E5E7EB;           /* Subtle borders */
    --color-white: #FFFFFF;
    --color-link: #2C5F8D;             /* Link color matches primary */
    --color-link-hover: #1A4770;       /* Darker on hover */

    /* Fluid Typography System */
    --font-size-h1: clamp(2rem, 4vw + 1rem, 3rem);           /* 32px → 48px */
    --font-size-h2: clamp(1.75rem, 3vw + 0.75rem, 2.5rem);   /* 28px → 40px */
    --font-size-h3: clamp(1.375rem, 2vw + 0.5rem, 1.875rem); /* 22px → 30px */
    --font-size-h4: clamp(1.125rem, 1.5vw + 0.5rem, 1.5rem); /* 18px → 24px */
    --font-size-body: clamp(1rem, 1vw + 0.5rem, 1.125rem);   /* 16px → 18px */
    --font-size-small: clamp(0.875rem, 0.5vw + 0.5rem, 1rem);/* 14px → 16px */

    /* Spacing Scale */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);         /* 8px → 12px */
    --space-sm: clamp(0.75rem, 2vw, 1rem);           /* 12px → 16px */
    --space-md: clamp(1rem, 2.5vw, 1.5rem);          /* 16px → 24px */
    --space-lg: clamp(1.5rem, 3vw, 2rem);            /* 24px → 32px */
    --space-xl: clamp(2rem, 4vw, 3rem);              /* 32px → 48px */
    --space-2xl: clamp(3rem, 6vw, 5rem);             /* 48px → 80px */

    /* Typography Settings */
    --line-height-tight: 1.3;
    --line-height-normal: 1.7;
    --line-height-relaxed: 1.8;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-base: all 0.3s ease;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 991px) {
    .header-img {
        width: 100%;
    }
}

/* ============================================
   TYPOGRAPHY ENHANCEMENTS
   ============================================ */
body {
    font-family: 'Poppins', sans-serif;
    font-weight: 300;
    line-height: var(--line-height-relaxed);
    color: var(--color-text-dark);
    font-size: var(--font-size-body);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-accent);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

h4 {
    font-size: var(--font-size-h4);
}

.lead {
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-dark);
    margin-bottom: var(--space-lg);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
#header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header-nav-main .nav-pills .nav-link,
.header-nav-main .nav-pills .dropdown-item {
    color: var(--color-text-dark);
    font-weight: 400;
    transition: var(--transition-base);
    padding: var(--space-sm) var(--space-md);
}

.header-nav-main .nav-pills .nav-link:hover,
.header-nav-main .nav-pills .dropdown-item:hover,
.header-nav-main .nav-pills .nav-link.active {
    color: var(--color-primary);
    background-color: transparent;
}

/* ============================================
   BIO SECTION
   ============================================ */
.bio-section1 {
    padding: var(--space-xl) 0;
}

.bio-section1 a {
    color: var(--color-link);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
    border-bottom: 1px solid transparent;
}

.bio-section1 a:hover {
    color: var(--color-link-hover);
    border-bottom-color: var(--color-link-hover);
}

/* ============================================
   SECTIONS & SPACING
   ============================================ */
.container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.main {
    background-color: var(--color-white);
}

section,
.section {
    padding: var(--space-2xl) 0;
}

/* Generous whitespace between content blocks */
.row {
    margin-bottom: var(--space-xl);
}

.py-4 {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.mb-2 {
    margin-bottom: var(--space-md);
}

.pt-5 {
    padding-top: var(--space-2xl);
}

/* ============================================
   FEATURE BOXES
   ============================================ */
.feature-box {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.feature-box:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-box i {
    color: var(--color-primary);
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.feature-box h4 {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-box p {
    color: var(--color-text-muted);
    font-size: var(--font-size-small);
    line-height: var(--line-height-normal);
}

/* ============================================
   CREDENTIALS & EDUCATION
   ============================================ */
.credentials-list,
.education-list {
    list-style: none;
    padding: 0;
    margin: var(--space-lg) 0;
}

.credentials-list li,
.education-list li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-dark);
    line-height: var(--line-height-normal);
}

.credentials-list li:last-child,
.education-list li:last-child {
    border-bottom: none;
}

.credentials-list li strong,
.education-list li strong {
    color: var(--color-accent);
    font-weight: 600;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-xl) 0;
}

footer p {
    font-size: var(--font-size-small) !important;
    color: var(--color-white);
    margin: 0;
}

footer a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition-base);
}

footer a:hover {
    color: var(--color-white);
}

/* ============================================
   BUTTONS & INTERACTIVE ELEMENTS
   ============================================ */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    border-radius: 4px;
    transition: var(--transition-base);
}

.btn-primary:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
/* Focus states for keyboard navigation */
a:focus,
button:focus,
input:focus,
.nav-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Ensure sufficient color contrast (WCAG AA) */
.text-primary {
    color: var(--color-primary) !important;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.appear-animation {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    :root {
        --space-2xl: clamp(2rem, 4vw, 3rem);
    }

    .container {
        padding-left: var(--space-sm);
        padding-right: var(--space-sm);
    }

    .bio-section1 {
        padding: var(--space-lg) 0;
    }

    section,
    .section {
        padding: var(--space-xl) 0;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    * {
        background: white !important;
        color: black !important;
    }

    header,
    footer,
    .header-nav-features {
        display: none;
    }
}