/* styles */
/* Reset default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

 /* Full-screen loading overlay */
 #loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #000;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transition: opacity 0.5s ease-out;
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top: 5px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fade-out effect */
.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Variables for consistent theming */
:root {
    --primary-color: #1a1a1a;
    --secondary-color: #3d5afe;
    --accent-color: #00e5ff;
    --text-color: #e0e0e0;
    --light-text: #ffffff;
    --background-color: #121212;
    --card-background: rgba(255, 255, 255, 0.05);
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --spacing-unit: 1rem;
    --max-width: 1200px;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Georgia', serif;
}

/* Base styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background: #121212;

    /* Flexbox for full height layout */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-unit);
    line-height: 1.2;
    color: var (--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-unit);
}

/* Links */
a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--accent-color);
}

/* Layout Components */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
    flex-grow: 1;
}

.section-container {
    padding: 2rem 0;
    margin: 0 auto;
    max-width: 1200px;
}

.section-header {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eaeaea;
}

@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css');

/* Navigation */
.nav {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    transition: all var(--transition-speed) ease-in-out;
}

.nav-link {
    color: var(--light-text);
    padding: 0.35rem 1rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
    margin-bottom: 0.35rem;
    background-color: transparent;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.nav-link i {
    margin-right: 0.5rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light-text);
}

/* Navigation Toggle */
.nav-toggle {
    display: none;
    padding: .5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
}

.hamburger {
    width: 30px;
    height: 3px;
    background-color: var(--light-text);
    display: block;
    position: relative;
    transition: all 0.3s ease-in-out;
}

.hamburger::before,
.hamburger::after {
    content: '';
    width: 30px;
    height: 3px;
    background-color: var(--light-text);
    display: block;
    position: absolute;
    transition: all 0.3s ease-in-out;
}

.hamburger::before {
    transform: translateY(-10px);
}

.hamburger::after {
    transform: translateY(10px);
}

.nav-toggle.active .hamburger {
    background-color: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-list-visible {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
    margin-bottom: var(--spacing-unit);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.45);
    border-color: var(--accent-color);
}

/* Buttons */
.button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    color: var(--light-text);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    z-index: 1;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: width 0.3s ease;
    z-index: -1;
}

.button:hover::before {
    width: 100%;
}

.button:hover {
    background-color: var (--accent-color);
    color: var(--light-text);
}

.button-outline {
    background-color: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.button-outline:hover {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-unit);
    perspective: 1000px;
}


/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-unit); }
.mb-1 { margin-bottom: var(--spacing-unit); }
.ml-1 { margin-left: var(--spacing-unit); }
.mr-1 { margin-right: var(--spacing-unit); }

.p-1 { padding: var(--spacing-unit); }
.py-1 { padding-top: var(--spacing-unit); padding-bottom: var(--spacing-unit); }
.px-1 { padding-left: var(--spacing-unit); padding-right: var(--spacing-unit); }

/* Forms */
.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-input {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--light-text);
    font-family: var(--font-primary);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}
@supports (-webkit-backdrop-filter: none) {
    .form-input {
        background-color: #1a1a1a;
        opacity: 0.8;
    }
}
/* Label positioning */
.form-label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
    pointer-events: none;
    font-size: 1rem;
    background: var(--primary-color);
    padding: 0 0.5rem;
}

/* Label animation */
.form-input:focus + .form-label,
.form-input:not(:placeholder-shown) + .form-label {
    top: -0.5rem;
    left: 0.8rem;
    font-size: 0.8rem;
    color: var(--accent-color);
}

/* Handle placeholder */
.form-input::placeholder {
    opacity: 0;
}

.form-input:focus::placeholder {
    opacity: 0.5;
}

/* Form validation states */
.form-input.is-valid {
    border-color: #00ff9d;
}

.form-input.is-invalid {
    border-color: #ff4757;
}

/* Form feedback messages */
.form-feedback {
    position: absolute;
    bottom: -1.5rem;
    left: 0;
    font-size: 0.8rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.form-input.is-invalid + .form-feedback {
    opacity: 1;
    transform: translateY(0);
    color: #ff4757;
}

/* Form group hover effect */
.form-group:hover .form-input:not(:focus) {
    border-color: rgba(255, 255, 255, 0.2);
}

/* Input autofill styles */
.form-input:-webkit-autofill,
.form-input:-webkit-autofill:hover,
.form-input:-webkit-autofill:focus {
    -webkit-text-fill-color: var(--light-text);
    -webkit-box-shadow: 0 0 0px 1000px var(--primary-color) inset;
    transition: background-color 5000s ease-in-out 0s;
}

/* Form submit button enhancement */
.form-submit {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    border: none;
    padding: 1rem 2rem;
    color: var(--light-text);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.form-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: all 0.5s ease;
}

.form-submit:hover::before {
    left: 100%;
}

/* Form group loading state */
.form-group.is-loading::after {
    content: '';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: rotate 0.8s linear infinite;
}

@keyframes rotate {
    to {
        transform: translateY(-50%) rotate(360deg);
    }
}

/* Footer */
.footer {
    background: linear-gradient(0deg, var(--primary-color) 0%, transparent 100%);
    color: var(--light-text);
    padding: 2rem 0;
    margin-top: auto;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

/* Popup Window */
#popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease-in-out; /* Add transition for opacity */
}

#popup.visible {
    opacity: 1;
}

#popup-content {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    max-width: 800px;
    margin: 5% auto;
    position: relative;
    transform: translateY(-20px);
    transition: transform 0.3s ease-in-out; /* Add transition for transform */
}

#popup.visible #popup-content {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    section .grid[style*="grid-template-columns"] {
            grid-template-columns: repeat(1, 1fr) !important;
    }

     .nav-list.nav-list-visible {
        padding: 1rem;
        max-height: 300px;
        opacity: 1;
    } */
    .nav-list {
        display: none;  /* Change from position: absolute */
        width: 100%;
        background-color: var(--primary-color);
        padding: 0;
    }

    .nav-list.nav-list-visible {
        display: flex;  /* Changed from position-related properties */
        flex-direction: column;
        padding: 1rem;
    }

    .grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .nav-toggle {
        display: block;
        position: absolute;
        right: 1rem;
        top: 50%;
        transform: translateY(-50%);
    }

    .nav-link {
        width: 100%;
        padding: 0.5rem 1rem;  /* Reduced from 0.75rem */
        text-align: left;
        background-color: transparent; /* Changed from var(--secondary-color) to transparent */
        color: var(--light-text);
        margin-bottom: 0.5rem;
        border-radius: var(--border-radius);
        transition: background-color var(--transition-speed);
    }

    .nav-link:hover {
        background-color: rgba(255, 255, 255, 0.1); /* Changed from var(--accent-color) to match desktop hover */
    }

    .nav-link + .nav-link {
        margin-top: 0.5rem;
    }

    .container {
        position: relative;
    }

    .nav-toggle {
        display: block;
        position: absolute;
        right: 1rem;
        top: 0;
        z-index: 1001;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        padding: 0;
        width: 100%;
    }
    .nav-link {
        width: 100%;
        display: block;
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 12px;
    }

    section .grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .container {
        padding: 0 0.5rem;
    }
}

/* Ensure buttons do not overlap text */
.button, .button-outline {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Add spacing between navbar buttons */
.nav-link {
    margin-bottom: 0.5rem;
}

/* Alert Messages */
.alert {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Header animation */
header h1 {
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradient 8s ease infinite;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

::-webkit-scrollbar-track {
    background: var(--primary-color);
}

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

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

/* .card {
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
} */
 
header.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem;
    position: relative;
    transform-style: preserve-3d;
    z-index: 1;
}

/* Add parallax background effect */
header.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: var(--primary-color); */
    transform: translateZ(-1px);
    z-index: -9999;
}

/* Add smooth scroll container */
.scroll-container {
    height: 100vh;
    /* overflow-y: auto; */
    overflow-y: hidden;
    perspective: 2px;
    perspective-origin: 0 0;
}

/* Enhance header content animation */
header.container h1,
header.container p {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

header.container p {
    animation-delay: 0.3s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.cert-link {
    color: white;
}
/* Modify section animations */
section {
    position: relative;
    z-index: 2;
    transform: translateZ(0);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Typewriter effect styles */
.typewriter-text {
    position: relative;
    display: inline-block;
    overflow: hidden;
    border-right: 0.15em solid var(--accent-color);
    white-space: nowrap;
    margin: 0;
    animation: 
      typing 3.5s steps(40, end),
      blink-caret 0.75s step-end infinite;
    opacity: 1 !important;
    transform: translateY(0) !important;
  }
  
  .typewriter-text.completed {
    border-right: none;
  }
  
  .typewriter-delay {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
    animation-delay: 3.5s; /* Delay should match the typing duration */
  }
  
  @keyframes typing {
    from { width: 0 }
    to { width: 100% }
  }
  
  @keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-color) }
  }

/* Print styles */
@media print {
    /* Reset background colors and text for better printing */
    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
        line-height: 1.4;
    }

    /* Hide non-essential elements */
    .nav,
    .footer,
    .button,
    .button-outline,
    #popup,
    ::-webkit-scrollbar {
        display: none !important;
    }

    /* Reset card styles for printing */
    .card {
        background: none !important;
        box-shadow: none !important;
        border: 1px solid #000000 !important;
        break-inside: avoid;
        page-break-inside: avoid;
    }

    /* Ensure text colors are readable */
    header, h1, h2, h3, h4, h5, h6, p, li, a {
        color: black !important;
    }

    /* Remove animations and transitions */
    * {
        animation: none !important;
        transition: none !important;
        transform: none !important;
    }

    /* Ensure links show their URLs */
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }

    /* Except for internal links */
    a[href^="#"]::after,
    a[href^="javascript:"]::after {
        content: "";
    }

    /* Add page breaks before major sections */
    section {
        page-break-before: auto;
        page-break-after: auto;
    }

    /* Ensure images print properly */
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    /* Reset gradients and backgrounds */
    header h1,
    .section-header,
    .button,
    .form-submit {
        background: none !important;
        -webkit-background-clip: unset !important;
        background-clip: unset !important;
        color: black !important;
    }

    /* Ensure container widths */
    .container,
    .section-container {
        width: 100% !important;
        max-width: none !important;
        margin: 0 !important;
        padding: 0.5cm !important;
    }

    /* Adjust grid layout for print */
    .grid {
        display: block !important;
    }

    /* Add page numbers */
    @page {
        margin: 1cm;
    }

    /* Ensure white background for form inputs */
    .form-input {
        background: white !important;
        border: 1px solid #ddd !important;
        color: black !important;
    }
    * {
        animation: none !important;
        transition: none !important;
        transform: none !important;
        opacity: 1 !important;
    }

    /* Reset header animations */
    header.container h1.typewriter-text,
    header.container p.typewriter-text {
    animation: 
        blink-caret 0.75s step-end infinite;
    /* opacity: 1 !important; */
        /* transform: translateY(0) !important; */
    }

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

    /* Reset section animations */
    section {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    /* Reset parallax effects */
    .scroll-container {
        perspective: none !important;
        perspective-origin: unset !important;
        overflow: visible !important;
        height: auto !important;
    }

    /* Reset header container 3D effects */
    header.container {
        transform-style: flat !important;
        min-height: auto !important;
    }

    /* Ensure all content is visible */
    .hidden,
    [class*="fade"] {
        opacity: 1 !important;
        visibility: visible !important;
    }
}