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

:root {
    --transition-duration: 0.4s;
    --transition-timing-function: ease-in-out;
    --location-text-visible-width: 170px;
    --icon-text-gap: 8px;
    --initial-icon-gap: 20px;
    --location-wrapper-top-margin: 10px;
}

html {
    scroll-padding-top: 85px;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding-top: 64px;
    background: linear-gradient(to bottom right, #d1b8f0, #dff4ff);
    color: #2a2a2a;
    transition: background 0.3s, color 0.3s;
    min-height: 100vh;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #e7f5ff; 
    backdrop-filter: blur(10px);
    z-index: 1001;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: background 0.3s, box-shadow 0.3s;
}

.navbar ul {
    list-style: none;
    margin: 0;
    padding: 1em 2em;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2em;
    flex-wrap: nowrap;
}

.navbar ul li:last-child {
    margin-left: auto;
}

.navbar a {
    text-decoration: none;
    color: #2a2a2a;
    font-weight: bold;
    transition: color 0.3s, border-bottom 0.3s;
}

.navbar a:hover {
    color: #2b6cb0;
    border-bottom: 2px solid #2b6cb0;
}

.nav-skills-link,
.nav-certifications-link {
    display: block;
}

.dark-mode-btn {
    display: flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.3em 1.2em;
    background: #dfe3e8;
    color: #23263a;
    border: none;
    border-radius: 2em;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    outline: none;
}

.dark-mode-btn:active,
.dark-mode-btn:focus {
    box-shadow: 0 0 0 2px #ffe600;
}

body.dark-mode .dark-mode-btn {
    background: #23263a;
    color: #ffe600;
    border: 1px solid #ffe600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2em;
    position: relative;
    z-index: 101;
    transition: background 0.3s, color 0.3s;
    display: grid;
    grid-template-columns: 260px 1fr 260px;
    grid-template-areas:
        "skills-area main-header certifications-area"
        "skills-area main-about certifications-area"
        "skills-area main-education certifications-area"
        "skills-area main-achievements certifications-area"
        "skills-area main-projects certifications-area"
        "skills-area main-footer certifications-area";
    gap: 20px;
    padding-top: 20px;
    padding-bottom: 20px;
}

header {
    grid-area: main-header;
    text-align: center;
    padding: 2em 1em 2em 1em;
    background: linear-gradient(135deg, #e6edf7, #f2e4e4);
    color: #1e1e1e;
    position: relative;
    transition: background 0.3s, color 0.3s;
    overflow: hidden;
}
.about { grid-area: main-about; }
.education { grid-area: main-education; }
.achievements { grid-area: main-achievements; }
.projects { grid-area: main-projects; }
footer { grid-area: main-footer; }

.skills-section,
.certifications-section,
.about,
.education,
.achievements,
.projects {
    padding: 1.5em;
    background: #ffffff;
    border-radius: 1em;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    transition: background 0.3s, box-shadow 0.3s;
}

.about .card-content,
.education .card-content {
    padding: 0 1em 1em 1em;
}

.skills-section h2,
.certifications-section h2,
.about h2,
.education h2,
.achievements h2,
.projects h2 {
    color: #1a4e8a;
    border-bottom: 2px solid #7fa6dc;
    padding-bottom: 0.5em;
    margin-top: 0;
}

.list-card-item {
    background: #e6e9ef;
    margin: 0.7em 0;
    padding: 1em 1.2em;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s, color 0.3s;
    cursor: pointer;
    font-size: 1em;
}

.list-card-item:hover {
    color: #1a4e8a;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}

/* --- LIST PADDING FIX --- */
.skills-section ul,
.certifications-section ul {
    list-style-position: inside;
    padding: 0;
    margin: 0;
}

/* --- TEXT WRAP FIX (Light Mode) --- */
.skills-section .list-card-item,
.certifications-section .list-card-item {
    padding: 0.5em 0.7em;
    font-size: 1.05em;
    white-space: normal;
    overflow-wrap: break-word;
    word-wrap: break-word;
    display: flex;
    flex-wrap: wrap;
}

.toggle-btn {
    display: none !important;
}

@media (min-width: 1101px) {
    .nav-skills-link,
    .nav-certifications-link {
        display: none;
    }

    /* --- SCROLLING FIX --- */
    .skills-section {
        grid-area: skills-area;
        position: sticky;
        top: calc(64px + 20px);
        height: calc(100vh - 64px - 40px);
        align-self: start;
        overflow-y: auto;
    }


    .certifications-section {
        grid-area: certifications-area;
        position: sticky;
        top: calc(64px + 20px);
        height: calc(100vh - 64px - 40px);
        align-self: start;
        overflow-y: auto;
    }

    .container {
        padding-left: 0;
        padding-right: 0;
    }
	
    /* --- SCROLLBAR STYLING --- */
    .skills-section::-webkit-scrollbar,
    .certifications-section::-webkit-scrollbar {
        width: 10px;
    }
    
    .skills-section::-webkit-scrollbar-track,
    .certifications-section::-webkit-scrollbar-track {
        background: #f1f1f1; 
        border-radius: 10px;
    }

    .skills-section::-webkit-scrollbar-thumb,
    .certifications-section::-webkit-scrollbar-thumb {
        background: #a0d4ff;
        border-radius: 10px;
    }

    .skills-section::-webkit-scrollbar-thumb:hover,
    .certifications-section::-webkit-scrollbar-thumb:hover {
        background: #0077cc;
    }

    body.dark-mode .skills-section::-webkit-scrollbar-track,
    body.dark-mode .certifications-section::-webkit-scrollbar-track {
        background: #23263a;
    }

    body.dark-mode .skills-section::-webkit-scrollbar-thumb,
    body.dark-mode .certifications-section::-webkit-scrollbar-thumb {
        background: #4a5568;
    }

    body.dark-mode .skills-section::-webkit-scrollbar-thumb:hover,
    body.dark-mode .certifications-section::-webkit-scrollbar-thumb:hover {
        background: #40cfff;
    }
}

@media (max-width: 1100px) {
    .nav-skills-link,
    .nav-certifications-link {
        display: block;
    }

    .container {
        display: block;
        max-width: 100%;
        padding: 1em;
        gap: 0;
    }

    .skills-section,
    .certifications-section {
        position: static;
        height: auto;
    }

    section {
        margin-bottom: 1em;
    }
      
    .about {
        margin-top: 1.5em;
    }

    .projects {
        margin-bottom: 1em;
    }
}

@media (max-width: 790px) {
    .navbar ul {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 1em;
    }

    .navbar ul::-webkit-scrollbar {
        height: 0;
    }
    .navbar ul::-webkit-scrollbar-thumb {
        background: transparent;
    }
    .navbar ul::-webkit-scrollbar-track {
        background: transparent;
    }
}

header {
    text-align: center;
    padding: 2em 1em 2em 1em;
    background: linear-gradient(135deg, #dbe9f6, #e7ecf3);
    color: rgb(0, 0, 0);
    position: relative;
    transition: background 0.3s, color 0.3s;
    overflow: hidden; 
}

.photo-frame {
    width: 140px;
    height: 140px;
    margin: 0 auto 1em;
    perspective: 1000px;
    display: flex;
    align-items: center;
    justify-content: center;
}
#profile-pic {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
    border: 4px solid #222222;
    background: #fff;
    transition: none;
    transform-style: preserve-3d;
}
#profile-pic:hover {
    transform: none !important;
}

/* --- Contact Icons Animation --- */
.contact-icons {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    margin-top: 1em;
    position: relative; 
    gap: var(--initial-icon-gap);
    padding-bottom: 0;
    transition: padding-bottom var(--transition-duration) var(--transition-timing-function),
                flex-wrap var(--transition-duration) var(--transition-timing-function);
    min-height: 40px;
}

.top-icons-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--initial-icon-gap);
    order: 0;
    flex-shrink: 0;
}

.contact-icons a {
    text-decoration: none;
    color: inherit;
    position: relative; 
    z-index: 1; 
}

.contact-icons i {
    font-size: 1.5em;
    color: #2a2a2a;
    background: #ffffff;
    padding: 8px;
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out, color 0.3s ease-in-out, background 0.3s ease-in-out;
    margin: 0;
}

.contact-icons i:hover {
    color: #ffe600;
    background: #f0f0f0;
    transform: scale(1.3);
}

#locationIconWrapper {
    display: flex; 
    flex-direction: row;
    align-items: center; 
    gap: 0;
    transition: margin-top var(--transition-duration) var(--transition-timing-function), 
                gap var(--transition-duration) var(--transition-timing-function),
                overflow var(--transition-duration) var(--transition-timing-function);
    z-index: 2; 
    order: 0;
    margin-top: 0;
    overflow: hidden;
    flex-basis: auto;
    justify-content: center;
    flex-shrink: 0;
}

#locationText {
    opacity: 0;
    pointer-events: none; 
    white-space: nowrap; 
    color: #2a2a2a;
    font-size: 1em;
    width: 0;
    transition: opacity var(--transition-duration) var(--transition-timing-function), 
                width var(--transition-duration) var(--transition-timing-function);
    transition-delay: 0s; 
    display: inline-block; 
    vertical-align: middle;
}

/* --- HOVER ANIMATION CLASSES (added by JavaScript) --- */
.contact-icons.animate-wrap {
    flex-wrap: wrap;
    padding-bottom: var(--location-wrapper-top-margin);
}

#locationIconWrapper.animate-hover {
    order: 1;
    flex-basis: 100%;
    margin-top: var(--location-wrapper-top-margin);
    gap: var(--icon-text-gap);
    overflow: visible;
    justify-content: center;
}

#locationIconWrapper.animate-hover #locationText {
    opacity: 1;
    pointer-events: auto;
    width: var(--location-text-visible-width);
    transition-delay: calc(var(--transition-duration) / 2);
}

.contact-icons.animate-wrap .top-icons-wrapper {
    order: 0;
}

section {
    opacity: 0;
}

.fade-in {
    animation: fadeInUp 1s ease forwards;
    opacity: 1 !important;
}
@keyframes fadeInUp {
    0% { transform: translateY(30px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

.project-card {
    background: #fdfdfd;
    margin: 1em 0;
    padding: 1.5em;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.09);
}
.project-card h3 {
    margin-top: 0;
    color: #2c3e50;
    transition: color 0.3s;
}
.project-card:hover h3 {
    color: #0077cc;
}

.project-card p {
    overflow-wrap: break-word;
    word-wrap: break-word;
}

footer {
    text-align: center;
    padding: 1em;
    background: #fdfdfd;
    color: #888;
    border-radius: 0 0 1em 1em;
    transition: background 0.3s, color 0.3s;
}

/* --- LIGHT MODE: CONTENT LINK STYLES (improve visibility & accessibility) --- */
/* Target content links inside the main container and typical sections, leaving navbar/contact icons untouched */
.container a,
.projects a,
.about a,
.education a,
.achievements a,
.skills-section a,
.certifications-section a,
.project-card a,
footer a {
    color: #1a4e8a; /* deep blue matching section headings */
    text-decoration: underline;
    text-decoration-thickness: 1px;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.container a:visited,
.project-card a:visited,
footer a:visited {
    color: #6b8fb3; /* softer visited tone */
}

.container a:hover,
.container a:focus,
.project-card a:hover,
.project-card a:focus,
footer a:hover,
footer a:focus {
    color: #0077cc; /* stronger blue on hover/focus */
    outline: none;
}

/* Focus ring for keyboard users (light mode) */
.container a:focus,
.project-card a:focus,
footer a:focus {
    box-shadow: 0 0 0 3px rgba(43,108,176,0.12);
    border-radius: 4px;
}

/* ===================== DARK MODE ===================== */
body.dark-mode {
    background: #181824;
    color: #e3e3e3;
}
body.dark-mode .navbar {
    background: #0d1b2aee; /* <-- NAVBAR COLOR FIX (Dark) */
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
body.dark-mode .skills-section,
body.dark-mode .certifications-section,
body.dark-mode .about,
body.dark-mode .education,
body.dark-mode .achievements,
body.dark-mode .projects {
    background: #23263a;
    color: #e3e3e3;
}
body.dark-mode .skills-section h2,
body.dark-mode .certifications-section h2,
body.dark-mode .about h2,
body.dark-mode .education h2,
body.dark-mode .achievements h2,
body.dark-mode .projects h2 {
    color: #ffe600;
    border-bottom: 2px solid #0077cc;
}

body.dark-mode .list-card-item {
    background: #23263a;
    color: #e3e3e3;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
body.dark-mode .list-card-item:hover {
    color: #ffe600;
}

/* --- TEXT WRAP FIX (Dark Mode) --- */
body.dark-mode .skills-section .list-card-item,
body.dark-mode .certifications-section .list-card-item {
    background: transparent;
    box-shadow: none;
    color: #e3e3e3;
    white-space: normal;
    overflow-wrap: break-word;
    word-wrap: break-word;
    display: flex;
    flex-wrap: wrap;
}
body.dark-mode .skills-section .list-card-item:hover,
body.dark-mode .certifications-section .list-card-item:hover {
    background: #2e3350;
    color: #ffe600;
}

body.dark-mode .project-card {
    background: #23263a;
    color: #e3e3e3;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
body.dark-mode header {
    background: linear-gradient(135deg, #23263a, #3c3e5a);
    color: #fff;
}
body.dark-mode .project-card h3 {
    color: #ffe600;
}
body.dark-mode .project-card:hover h3 {
    color: #ffe600;
}

body.dark-mode footer {
    background: #23263a;
    color: #aaa;
}
body.dark-mode .dark-mode-btn {
    background: #23263a;
    color: #ffe600;
    border: 1px solid #ffe600;
}
body.dark-mode .navbar a {
    color: #ffe600;
}

body.dark-mode .navbar a:hover {
    color: #40cfff;
    border-bottom: 2px solid #40cfff;
}

body.dark-mode #locationText {
    color: #e3e3e3;
}

body.dark-mode .contact-icons i {
    color: #ffffff;
    background: #2a2a2a;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

body.dark-mode .contact-icons i:hover {
    color: #ffe600;
    background: #333;
    transform: scale(1.3);
}

/* --- DARK MODE: CONTENT LINK STYLES (improved contrast & accessibility) --- */
/* Target content links inside the main container and typical sections, leaving navbar/contact icons as defined above */
body.dark-mode .container a,
body.dark-mode .projects a,
body.dark-mode .about a,
body.dark-mode .education a,
body.dark-mode .achievements a,
body.dark-mode .skills-section a,
body.dark-mode .certifications-section a,
body.dark-mode .project-card a,
body.dark-mode footer a {
    color: #40cfff; /* bright cyan for strong contrast against dark background */
    text-decoration: underline;
    text-decoration-thickness: 1px;
    transition: color 0.15s ease, background-color 0.15s ease;
}

body.dark-mode .container a:visited,
body.dark-mode .project-card a:visited,
body.dark-mode footer a:visited {
    color: #9beaff; /* softer visited tone */
}

body.dark-mode .container a:hover,
body.dark-mode .container a:focus,
body.dark-mode .project-card a:hover,
body.dark-mode .project-card a:focus,
body.dark-mode footer a:hover,
body.dark-mode footer a:focus {
    color: #ffe600; /* highlight on hover/focus */
    outline: none;
}

/* High-visibility focus ring for keyboard users */
body.dark-mode .container a:focus,
body.dark-mode .project-card a:focus,
body.dark-mode footer a:focus {
    box-shadow: 0 0 0 3px rgba(64,207,255,0.12), 0 0 0 6px rgba(255,230,0,0.06);
    border-radius: 4px;
}