* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --light-bg: #ffffff;
    --light-text: #555555;
    --light-title: #000000;
    --dark-bg: #1a1a1a;
    --dark-text: #cccccc;
    --dark-title: #ffffff;
    --nav-bg-light: rgba(255, 255, 255, 0.85);
    --nav-bg-dark: rgba(30, 30, 30, 0.9);
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--light-bg);
    color: var(--light-text);
    transition: background 0.3s, color 0.3s;
    overflow-x: hidden;
}

body.dark-theme {
    background: var(--dark-bg);
    color: var(--dark-text);
}

body.dark-theme .title {
    color: var(--dark-title);
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

p {
    color: rgb(85, 85, 85);
}

body.dark-theme p {
    color: var(--dark-text);
}

a, .btn {
    transition: all 300ms ease;
}

a {
    color: black;
    text-decoration: none;
}

body.dark-theme a {
    color: var(--dark-text);
}

a:hover {
    color: grey;
    text-decoration: underline;
    text-underline-offset: 1rem;
    text-decoration-color: rgb(181, 181, 181);
}

/* NAVIGATION - Reused and adapted from index.css */
nav, .nav-links {
    display: flex;
}

nav {
    justify-content: space-around;
    align-items: center;
    height: 17vh;
}

.nav-links {
    gap: 2rem;
    list-style: none;
    font-size: 1.5rem;
    align-items: center;
}

.logo {
    height: 2rem;
    width: auto;
}

.logo:hover {
    cursor: pointer;
}

body.dark-theme .logo {
    filter: invert(1);
}

.theme-toggle {
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
    color: black;
    padding: 0;
}

body.dark-theme .theme-toggle {
    color: white;
}

/* HAMBURGER MENU - Reused from index.css */
#hamburger-nav {
    display: none;
}

.hamburger-menu {
    position: relative;
    display: inline-block;
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 24px;
    width: 30px;
    cursor: pointer;
}

.hamburger-icon span {
    width: 100%;
    height: 2px;
    background-color: black;
    transition: all 0.3s ease-in-out;
}

body.dark-theme .hamburger-icon span {
    background-color: white;
}

.menu-links {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--nav-bg-light);
    backdrop-filter: blur(15px);
    width: fit-content;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000; /* Ensures menu is on top of all other content */
}

body.dark-theme .menu-links {
    background-color: var(--nav-bg-dark);
}

.menu-links a, .menu-links button { width: 100%;
    display: block;
    padding: 10px;
    text-align: center;
    font-size: 1.5rem;
    color: black;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
}

body.dark-theme .menu-links a, body.dark-theme .menu-links button {
    color: var(--dark-text);
}

.menu-links li {
    list-style: none;
}

.menu-links.open {
    max-height: 300px;
}

.hamburger-icon.open span:first-child {
    transform: rotate(45deg) translate(10px, 5px);
}
.hamburger-icon.open span:nth-child(2) {
    opacity: 0;
}
.hamburger-icon.open span:last-child {
    transform: rotate(-45deg) translate(10px, -5px);
}

/* SECTIONS & TITLES - Reused from index.css */
section {
    padding-top: 4vh;
    margin: 0 10rem;
    box-sizing: border-box;
    min-height: fit-content;
    position: relative;
}

.section__text__p1 {
    text-align: center;
    font-weight: 600;
}

.title {
    font-size: 3rem;
    text-align: center;
    color: var(--light-title);
}

/* NEW: CERTIFICATE PAGE SPECIFIC STYLES */
#certificate {
    padding-bottom: 4rem;
    position: relative;
    position: relative; /* Allows absolute positioning of arrows */
}

.filter-container {
    text-align: center;
    margin: 1rem 0 2rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

#certificate-filter {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    border-radius: 8px;
    border: 1px solid rgb(163, 163, 163);
    background-color: var(--light-bg);
    color: var(--light-text);
    cursor: pointer;
}

body.dark-theme #certificate-filter {
    background-color: #3a3a3a;
    border-color: #666;
    color: var(--dark-text);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.certificate-count {
    font-size: 1.5rem;
    color: #888;
}

body.dark-theme .certificate-count {
    color: #aaa;
}

.category-title {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    text-align: left;
    color: var(--light-title);
    border-bottom: 2px solid #ccc;
    padding-bottom: 0.5rem;
}

body.dark-theme .category-title {
    color: var(--dark-title);
    border-bottom-color: #555;
}

.certificate-date {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 1rem;
}

body.dark-theme .certificate-date {
    color: #aaa;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
    justify-content: center;
}

.tag {
    background-color: #e0e0e0;
    color: #333;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
}

body.dark-theme .tag {
    background-color: #3a3a3a;
    color: #ddd;
}

.achievement-highlight {
    font-style: italic;
    color: #007bff;
    margin: 1rem 0;
}

body.dark-theme .achievement-highlight {
    color: #58a6ff;
}

.download-cv-container {
    text-align: center;
    margin-top: 3rem;
}

.hidden-category {
    display: none;
}

.read-more-link {
    color: black;
    text-decoration: none;
    font-weight: 600;
}

body.dark-theme .read-more-link {
    color: var(--dark-text);
}

.read-more-link:hover {
    text-decoration: underline;
}

/* Project Card Footer alignment */
.project-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    width: 100%;
}

.project-btn {
    width: auto;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
}

/* MENU STYLES */
.details-container {
    position: relative; /* Ensure absolute children are relative to this */
}

.menu-container {
    position: relative;
    display: inline-block;
}

.details-container .menu-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 10;
}

.menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    transition: background-color 0.3s;
}

body.dark-theme .menu-btn {
    color: var(--dark-text);
}

.menu-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark-theme .menu-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.options-menu {
    position: absolute;
    right: 0;
    top: 100%;
    background-color: var(--light-bg);
    border: 1px solid #ccc;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    min-width: 140px;
    z-index: 100;
    overflow: hidden;
}

.options-menu.open {
    display: flex;
}

body.dark-theme .options-menu {
    background-color: #2d2d2d;
    border-color: #555;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.menu-option {
    background: none;
    border: none;
    padding: 0.75rem 1rem;
    text-align: left;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--light-text);
    width: 100%;
    transition: background-color 0.2s;
}

body.dark-theme .menu-option {
    color: var(--dark-text);
}

.menu-option:hover {
    background-color: #f0f0f0;
}

body.dark-theme .menu-option:hover {
    background-color: #3a3a3a;
}

/* CERTIFICATE CARDS - Reused and adapted from index.css */
.experience-details-container {
    max-width: 1200px;
    margin: 2rem auto 0 auto;
}

.about-containers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.details-container {
    padding: 1.5rem;
    background: white;
    border-radius: 2rem;
    border: 1px solid rgb(163, 163, 163);
    text-align: center;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out, opacity 0.5s ease;
}

.details-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.details-container:has(.options-menu.open) {
    z-index: 20; /* Ensure the active card's menu appears above others */
}

body.dark-theme .details-container {
    background: #2d2d2d;
    border-color: #555;
}

body.dark-theme .details-container:hover {
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.1);
}

.certificate-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem auto;
    object-fit: contain;
}

.experience-sub-title {
    margin-bottom: 1rem;
    color: var(--light-title);
    font-size: 1.25rem;
}

body.dark-theme .experience-sub-title {
    color: var(--dark-title);
}

.details-container p {
    flex-grow: 1;
}

/* BUTTONS, ICONS, CONTACT, FOOTER - Reused from index.css */
.btn-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: auto; /* Pushes button to bottom of flex container */
    padding-top: 1rem;
}

.btn {
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    border-radius: 2rem;
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.btn-color-1 {
    border: 1px solid rgb(53, 53, 53);
    background: rgb(53, 53, 53);
    color: white;
}
.btn-color-1:hover {
    background: rgb(0, 0, 0);
}
.btn-color-2 {
    border: 1px solid rgb(53, 53, 53);
    background: none;
    color: black;
}
.btn-color-2:hover {
    background: rgb(53, 53, 53);
    color: white;
}
body.dark-theme .btn-color-1 {
    border: 1px solid #ffffff;
    background: #333333;
    color: white;
}
body.dark-theme .btn-color-1:hover {
    background: #ffffff;
    color: #000000;
}
body.dark-theme .btn-color-2 {
    border: 1px solid #ffffff;
    background: none;
    color: white;
}
body.dark-theme .btn-color-2:hover {
    background: #ffffff;
    color: #000000;
}

.icon {
    cursor: pointer;
    height: 2rem;
}

/* Dark theme support for icons */
body.dark-theme .arrow,
body.dark-theme .contact-icon {
    filter: invert(1);
}

.scroll-down-link, .scroll-up-link {
    display: inline-block;
    position: absolute;
    bottom: 2.5rem;
    right: -5rem;
}

.scroll-down-link:hover .arrow, .scroll-up-link:hover .arrow {
    transform: scale(1.1) !important;
    transition: transform 0.2s ease-in-out;
}

.arrow {
    width: 30px;
    height: 30px;
}

#contact {
    display: flex;
    justify-content: center;
    flex-direction: column;
    padding-top: 7vh;
    min-height: 70vh;
    position: relative; /* Allows absolute positioning of arrows */
}
.contact-form-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    width: 100%;
}
#contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 600px;
    background: rgb(250, 250, 250);
    border: 1px solid rgb(163, 163, 163);
    border-radius: 2rem;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
body.dark-theme #contact-form {
    background: #2d2d2d;
    border-color: #555;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--light-title);
}
body.dark-theme .form-group label {
    color: var(--dark-title);
}
.form-group input, .form-group textarea {
    padding: 0.75rem;
    border: 1px solid rgb(163, 163, 163);
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    background: var(--light-bg);
    color: var(--light-text);
}
body.dark-theme .form-group input, body.dark-theme .form-group textarea {
    background: #3a3a3a;
    border-color: #666;
    color: var(--dark-text);
}
.form-group button {
    width: 100%;
}

/* Form Status Message Styling */
#form-status {
    padding: 0.75rem 1rem;
    margin-top: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 500;
    display: none; /* Hidden by default */
    transition: all 0.3s ease;
}
#form-status.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}
#form-status.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}
/* Dark Theme Adjustments */
body.dark-theme #form-status.success {
    background-color: #1a3a22;
    color: #a7d7b7;
    border-color: #2a5c3d;
}
body.dark-theme #form-status.error {
    background-color: #4d1f24;
    color: #f5c6cb;
    border-color: #843534;
}
.contact-info-upper-container {
    display: flex;
    justify-content: center;
    border-radius: 2rem;
    border: 1px solid rgb(163, 163, 163);
    background: rgb(250, 250, 250);
    margin: 2rem auto;
    padding: 0.5rem;
}
body.dark-theme .contact-info-upper-container {
    background: #2d2d2d;
    border-color: #555;
}
.contact-info-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem;
}
.contact-info-container p {
    font-size: larger;
}
.contact-icon {
    cursor: default;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-text {
    font-size: larger;
}

footer {
    height: 26vh;
    margin: 0 1rem;
}

footer p {
    text-align: center;
}

.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}
.hidden {
    display: none;
}

/* Gentle fade-in animation for page load */
@keyframes gentle-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Apply the animation to the main content area */
#main-content {
  animation: gentle-fade-in 0.7s ease-out forwards;
}

/* TOAST NOTIFICATION */
.toast-notification {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: rgba(30, 30, 30, 0.95);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    pointer-events: none;
    text-align: center;
    max-width: 90vw;
}

.toast-notification.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

body.dark-theme .toast-notification {
    background-color: rgba(240, 240, 240, 0.95);
    color: #1a1a1a;
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
}

/* ACCESSIBLE TOOLTIPS */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    background-color: rgba(30, 30, 30, 0.9);
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 0.4rem;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    margin-bottom: 5px;
}

[data-tooltip]:hover::before,
[data-tooltip]:focus-visible::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-10px);
}

body.dark-theme [data-tooltip]::before {
    background-color: rgba(220, 220, 220, 0.9);
    color: #000;
    box-shadow: 0 2px 5px rgba(255,255,255,0.1);
}

nav [data-tooltip]::before {
    bottom: auto;
    top: 100%;
    transform: translateX(-50%) translateY(5px);
    margin-bottom: 0;
    margin-top: 5px;
}

nav [data-tooltip]:hover::before,
nav [data-tooltip]:focus-visible::before {
    transform: translateX(-50%) translateY(10px);
}

@media (hover: none), screen and (max-width: 600px) {
    [data-tooltip]::before {
        display: none;
    }
}