/* =================================
   Main Stylesheet - Dr. C. Ajithkumar Portfolio
   Fixed Navbar Issues and Mobile Responsiveness
   ================================= */

/* Global Variables */
:root {
    --primary-blue: #1e40af;
    --accent-gold: #fbbf24;
    --light-blue: #3b82f6;
    --dark-blue: #1e3a8a;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --text-gray: #64748b;
    --dark-gray: #334155;
    --black: #000000;
    
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-gold) 0%, #f59e0b 100%);
    --gradient-overlay: rgba(0, 0, 0, 0.3);
    
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.15);
    --shadow-strong: 0 12px 40px rgba(0, 0, 0, 0.2);
    
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 24px;
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.5s ease;
}

/* Global Reset */
* {
    box-sizing: border-box;
}

/* Hero Overlay Override - Force black overlay */
.hero .hero-overlay {
    background: rgba(0, 0, 0, 0.3) !important;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* ===================================
   NAVBAR STYLES - FIXED IMPLEMENTATION
   =================================== */

/* Main Navbar Container */
.navbar {
    background: rgba(30, 64, 175, 0.95) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    width: 100%;
}

/* Navbar when scrolled */
.navbar.scrolled {
    background: var(--primary-blue) !important;
    padding: 0.75rem 0;
    box-shadow: var(--shadow-medium);
}

/* Navbar Brand */
.navbar-brand {
    color: var(--white) !important;
    font-weight: 700 !important;
    font-size: 1.5rem !important;
    text-decoration: none !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--accent-gold) !important;
    text-decoration: none !important;
    transform: translateX(2px);
}

.navbar-brand i {
    color: var(--accent-gold);
    font-size: 1.8rem;
}

/* Navbar Toggle Button (Mobile) */
.navbar-toggler {
    border: 2px solid var(--white) !important;
    border-radius: 8px !important;
    padding: 0.5rem 0.75rem !important;
    background: transparent !important;
    transition: var(--transition);
}

.navbar-toggler:hover {
    border-color: var(--accent-gold) !important;
    background: rgba(251, 191, 36, 0.1) !important;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(251, 191, 36, 0.25) !important;
    border-color: var(--accent-gold) !important;
}

/* Custom Toggle Icon */
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
    width: 1.5rem;
    height: 1.5rem;
}

/* Navbar Collapse */
.navbar-collapse {
    flex-grow: 0;
}

/* Navbar Nav */
.navbar-nav {
    align-items: center;
    gap: 0.5rem;
}

/* Nav Items */
.nav-item {
    margin: 0 0.25rem;
}

/* Nav Links */
.nav-link {
    color: var(--white) !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    padding: 0.75rem 1.25rem !important;
    border-radius: 8px !important;
    transition: var(--transition);
    text-decoration: none !important;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition);
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: var(--accent-gold) !important;
    background: rgba(255, 255, 255, 0.1) !important;
    transform: translateY(-2px);
    text-decoration: none !important;
}

.nav-link:focus {
    color: var(--accent-gold) !important;
    background: rgba(255, 255, 255, 0.1) !important;
}

/* Active Nav Link */
.nav-link.active {
    color: var(--accent-gold) !important;
    background: rgba(251, 191, 36, 0.2) !important;
    border: 1px solid rgba(251, 191, 36, 0.3) !important;
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.2);
}

.nav-link.active:hover {
    background: rgba(251, 191, 36, 0.3) !important;
}

/* Hide nav icons on desktop */
.nav-icon {
    display: none;
}

/* Mobile Navbar Styles */
@media (max-width: 991.98px) {
    .navbar {
        padding: 0.75rem 0;
    }
    
    .navbar-collapse {
        background: rgba(30, 64, 175, 0.95) !important;
        margin-top: 1rem;
        padding: 2.5rem 2rem;
        border-radius: 25px;
        box-shadow: 
            0 25px 80px rgba(30, 64, 175, 0.4),
            0 15px 40px rgba(30, 64, 175, 0.3),
            0 5px 20px rgba(0, 0, 0, 0.2);
        border: none;
        backdrop-filter: blur(25px);
        position: relative;
        overflow: hidden;
    }
    
    .navbar-collapse::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, 
            transparent 25%, 
            rgba(255, 255, 255, 0.1) 50%, 
            transparent 75%);
        animation: rainbow-shimmer 3s ease-in-out infinite;
        pointer-events: none;
    }
    
    .navbar-collapse::after {
        content: '';
        position: absolute;
        top: -2px;
        left: -2px;
        right: -2px;
        bottom: -2px;
        background: linear-gradient(45deg, 
            #fbbf24, #f59e0b, #f97316, #10b981, #a855f7, #06b6d4, #10b981, #fbbf24);
        background-size: 400% 400%;
        border-radius: 27px;
        z-index: -1;
        animation: rainbow-border 4s ease infinite;
    }
    
    @keyframes rainbow-shimmer {
        0%, 100% { 
            transform: translateX(-100%);
            opacity: 0;
        }
        50% { 
            transform: translateX(100%);
            opacity: 1;
        }
    }
    
    @keyframes rainbow-border {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }
    
    .navbar-nav {
        gap: 0.8rem;
        width: 100%;
    }
    
    .nav-item {
        margin: 0;
        width: 100%;
        opacity: 0;
        transform: translateY(20px);
        animation: slideInUp 0.4s ease-out forwards;
    }
    
    .nav-item:nth-child(1) { animation-delay: 0.1s; }
    .nav-item:nth-child(2) { animation-delay: 0.15s; }
    .nav-item:nth-child(3) { animation-delay: 0.2s; }
    .nav-item:nth-child(4) { animation-delay: 0.25s; }
    .nav-item:nth-child(5) { animation-delay: 0.3s; }
    .nav-item:nth-child(6) { animation-delay: 0.35s; }
    .nav-item:nth-child(7) { animation-delay: 0.4s; }
    .nav-item:nth-child(8) { animation-delay: 0.45s; }
    
    @keyframes slideInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-link {
        padding: 1.4rem 2rem !important;
        border-radius: 20px !important;
        text-align: left;
        width: 100%;
        display: flex;
        align-items: center;
        margin-bottom: 1rem;
        border: none;
        background: linear-gradient(135deg, 
            rgba(255, 255, 255, 0.25) 0%, 
            rgba(255, 255, 255, 0.1) 100%);
        position: relative;
        overflow: hidden;
        transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
        backdrop-filter: blur(15px);
        font-size: 1.2rem !important;
        font-weight: 700 !important;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        color: var(--white) !important;
        box-shadow: 
            0 8px 32px rgba(255, 255, 255, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
    
    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg,
            rgba(251, 191, 36, 0.8) 0%,
            rgba(245, 158, 11, 0.8) 25%,
            rgba(249, 115, 22, 0.8) 50%,
            rgba(16, 185, 129, 0.8) 75%,
            rgba(168, 85, 247, 0.8) 100%);
        opacity: 0;
        transition: all 0.4s ease;
        z-index: -1;
    }
    
    .nav-link::after {
        content: '✨';
        position: absolute;
        right: 2rem;
        top: 50%;
        transform: translateY(-50%) scale(0);
        font-size: 1.2em;
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .nav-link:hover {
        transform: translateX(15px) scale(1.05) rotateY(5deg);
        background: rgba(255, 255, 255, 0.2);
        box-shadow: 
            0 20px 60px rgba(251, 191, 36, 0.4),
            0 10px 30px rgba(245, 158, 11, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.5);
        color: var(--white) !important;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    }
    
    .nav-link:hover::before {
        opacity: 0.3;
    }
    
    .nav-link:hover::after {
        opacity: 1;
        transform: translateY(-50%) scale(1.2) rotate(180deg);
    }
    
    .nav-link.active {
        transform: translateX(15px) scale(1.05) rotateY(5deg);
        background: linear-gradient(135deg,
            rgba(251, 191, 36, 0.4) 0%,
            rgba(245, 158, 11, 0.4) 50%,
            rgba(249, 115, 22, 0.4) 100%);
        box-shadow: 
            0 25px 80px rgba(251, 191, 36, 0.6),
            0 15px 40px rgba(245, 158, 11, 0.4),
            inset 0 1px 0 rgba(255, 255, 255, 0.6);
        color: var(--white) !important;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    }
    
    .nav-link.active::before {
        opacity: 0.5;
    }
    
    .nav-link.active::after {
        content: '🏃‍♂️';
        opacity: 1;
        transform: translateY(-50%) scale(1.3) rotate(0deg);
        animation: pulse-athlete 2s ease-in-out infinite;
    }
    
    @keyframes pulse-athlete {
        0%, 100% { transform: translateY(-50%) scale(1.3) rotate(0deg); }
        50% { transform: translateY(-50%) scale(1.5) rotate(5deg); }
    }
    
}

@media (max-width: 767.98px) {
    .navbar-brand {
        font-size: 1.25rem !important;
    }
    
    .navbar-brand i {
        font-size: 1.5rem;
    }
    
    .navbar-collapse {
        padding: 1rem;
        margin-top: 0.75rem;
    }
    
    .nav-link {
        padding: 0.875rem 1rem !important;
        font-size: 0.95rem !important;
    }
}

@media (max-width: 575.98px) {
    .navbar {
        padding: 0.5rem 0;
    }
    
    .navbar-brand {
        font-size: 1.1rem !important;
    }
    
    .navbar-brand i {
        font-size: 1.3rem;
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */

/* Text Colors */
.text-primary {
    color: var(--primary-blue) !important;
}

.text-accent {
    color: var(--accent-gold) !important;
}

.text-white {
    color: var(--white) !important;
}

.text-gray {
    color: var(--text-gray) !important;
}

/* Background Colors */
.bg-primary {
    background-color: var(--primary-blue) !important;
}

.bg-accent {
    background-color: var(--accent-gold) !important;
}

.bg-light-gray {
    background-color: var(--light-gray) !important;
}

/* Gradients */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-accent {
    background: var(--gradient-accent) !important;
}

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

/* ===================================
   RESPONSIVE UTILITIES
   =================================== */

/* Container Spacing */
.container {
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 576px) {
    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

/* Spacing for fixed navbar */
body {
    padding-top: 80px;
}

@media (max-width: 991.98px) {
    body {
        padding-top: 70px;
    }
}

@media (max-width: 767.98px) {
    body {
        padding-top: 65px;
    }
}

@media (max-width: 575.98px) {
    body {
        padding-top: 60px;
    }
}

/* ===================================
   COMMON BUTTON STYLES
   =================================== */

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--primary-blue);
    border-color: var(--accent-gold);
}

.btn-primary:hover {
    background: var(--accent-gold);
    color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    text-decoration: none;
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary-blue);
    text-decoration: none;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===================================
   ANIMATION CLASSES
   =================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    transform: translateY(50px);
    opacity: 0;
    transition: var(--transition-slow);
}

.slide-up.visible {
    transform: translateY(0);
    opacity: 1;
}

/* ===================================
   BOOTSTRAP OVERRIDES
   =================================== */

/* Fix Bootstrap navbar issues */
.navbar-expand-lg .navbar-nav .nav-link {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
}

.navbar-expand-lg .navbar-nav .nav-link.active {
    color: var(--accent-gold) !important;
}

/* Ensure proper collapse behavior */
.navbar-collapse.collapse:not(.show) {
    display: none;
}

.navbar-collapse.collapse.show {
    display: block;
}

.navbar-collapse.collapsing {
    height: 0;
    overflow: hidden;
    transition: height 0.35s ease;
}

/* Fix for mobile menu animation */
@media (max-width: 991.98px) {
    .navbar-collapse.collapsing {
        height: auto;
        opacity: 0;
        transition: opacity 0.35s ease;
    }
    
    .navbar-collapse.collapse.show {
        opacity: 1;
    }
    
    .navbar-collapse.collapse:not(.show) {
        opacity: 0;
    }
}

/* Ensure z-index hierarchy */
.navbar {
    z-index: 1050;
}

.navbar-collapse {
    z-index: 1051;
}

/* Fix focus states for accessibility */
.nav-link:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

.navbar-toggler:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* ===================================
   SUPPORTER TYPE BADGE STYLES
   =================================== */

/* Supporter Type Badge Styles */
.supporter-type-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.supporter-type-badge.supporter-type-doctor {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    color: white;
}

.supporter-type-badge.supporter-type-physiotherapist {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.supporter-type-badge.supporter-type-coach {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    color: #1e3a8a;
}

.supporter-type-badge.supporter-type-nutritionist {
    background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
    color: white;
}

.supporter-type-badge.supporter-type-sports_psychologist {
    background: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
    color: white;
}

.supporter-type-badge.supporter-type-fitness_trainer {
    background: linear-gradient(135deg, #374151 0%, #6b7280 100%);
    color: white;
}

.supporter-type-badge.supporter-type-massage_therapist {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.supporter-type-badge.supporter-type-sports_scientist {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    color: white;
}

.supporter-type-badge.supporter-type-medical_professional {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    color: white;
}

.supporter-type-badge.supporter-type-other {
    background: linear-gradient(135deg, #64748b 0%, #94a3b8 100%);
    color: white;
}

/* ===================================
   PRINT STYLES
   =================================== */

@media print {
    .navbar {
        display: none !important;
    }
    
    body {
        padding-top: 0 !important;
    }
}