/* =============================
   Base Configuration & Variables
   ============================= */
:root {
    /* Light theme - Improved contrast for WCAG 2.1 AA */
    --bg-color: #fafafa;
    --text-color: #1a202c;
    /* Improved contrast from #2c3e50 */
    --section-bg: #ffffff;
    --header-bg: linear-gradient(135deg, #4CAF50, #1DA1F2);
    --footer-bg: linear-gradient(135deg, #0A84FF, #3DDC84);
    --accent-color: #2d7d2d;
    /* Improved contrast from #3DDC84 */
    --link-color: #0d47a1;
    /* Improved contrast from #1a73e8 */
    --border-color: rgba(0, 0, 0, 0.12);
    /* Slightly stronger */
    --shadow-color: rgba(0, 0, 0, 0.1);
    /* Slightly stronger */
    --card-bg: #ffffff;
    --card-hover-bg: #f8f9fa;
    --skill-border: #2d7d2d;
    /* Matching accent color */

    /* Shared properties */
    --transition-speed: 400ms;
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
    --surface-shadow: 0 2px 8px var(--shadow-color);
    --surface-shadow-hover: 0 4px 16px var(--shadow-color);
    --container-width-xl: 1200px;
    --container-width-lg: 960px;
    --container-width-md: 720px;
    --container-width-sm: 540px;
    --section-spacing-desktop: 20px;
    --section-spacing-tablet: 15px;
    --section-spacing-mobile: 10px;
    --footer-icon-size: 24px;
    --footer-icon-size-mobile: 20px;
    --footer-icon-gap: 20px;
    --footer-icon-gap-tablet: 15px;
    --footer-icon-gap-mobile: 8px;
    --footer-icon-padding: 8px;

    /* Responsive sizing for circular elements */
    --profile-photo-size: min(256px, 80vw);
    --profile-photo-size-small: min(200px, 75vw);
    --circular-button-size: clamp(40px, 8vw, 48px);
    --circular-button-size-touch: max(44px, 10vw);
    --circular-button-size-small: max(36px, 8vw);
    --theme-toggle-size: clamp(40px, 8vw, 48px);
    --theme-toggle-size-mobile: max(36px, 8vw);
    --theme-toggle-size-touch: max(44px, 10vw);

    /* Fluid spacing system */
    --space-xs: clamp(5px, 1vw, 8px);
    --space-sm: clamp(8px, 2vw, 12px);
    --space-md: clamp(12px, 3vw, 20px);
    --space-lg: clamp(20px, 4vw, 30px);
    --space-xl: clamp(30px, 6vw, 50px);
    --space-2xl: clamp(40px, 8vw, 80px);

    /* Card padding system */
    --card-padding-sm: clamp(15px, 3vw, 20px);
    --card-padding-md: clamp(20px, 4vw, 30px);
    --card-padding-lg: clamp(25px, 5vw, 40px);
}

/* Core Layout */
html {
    scroll-behavior: smooth;
    /* Prevent horizontal scroll on mobile */
    overflow-x: hidden;
}

body {
    font-family: 'Cinzel', serif;
    margin: 0;
    padding: 0;
    background: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color var(--transition-speed) var(--transition-timing),
        color var(--transition-speed) var(--transition-timing);
    /* Safe area support for mobile devices */
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
    /* Prevent horizontal scroll */
    overflow-x: hidden;
    /* Improve text rendering on mobile */
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Container System */
.container,
main.container,
.footer-content {
    width: 95%;
    max-width: none;
    margin: 0 auto;
    padding: 0 max(15px, env(safe-area-inset-left, 15px));
    padding-right: max(15px, env(safe-area-inset-right, 15px));
}

main {
    flex: 1;
    width: 100%;
}

/* Content Protection */
* {
    max-width: 100%;
    box-sizing: border-box;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

img,
video {
    max-width: 100%;
    height: auto;
}

/* Performance optimizations for circular elements */
#profile-photo img,
#profile-photo video,
.footer-icons a,
#scroll-top,
#theme-toggle {
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0);
}

/* =============================
   Dark Mode
   ============================= */
body.dark-mode {
    /* Dark theme with improved contrast and depth */
    --bg-color: #0f172a;
    /* Darker background */
    --text-color: #f1f5f9;
    /* Better contrast */
    --section-bg: #1e293b;
    /* Better contrast */
    --header-bg: linear-gradient(135deg, #065f46, #0c4a6e);
    --footer-bg: linear-gradient(135deg, #1f2937, #065f46);
    --accent-color: #22d3ee;
    /* Better contrast in dark mode */
    --link-color: #7dd3fc;
    /* Better contrast */
    --border-color: rgba(255, 255, 255, 0.12);
    /* Stronger border */
    --shadow-color: rgba(0, 0, 0, 0.4);
    /* Stronger shadow */
    --card-bg: rgba(30, 41, 59, 0.9);
    /* Better opacity */
    --card-hover-bg: rgba(51, 65, 85, 0.95);
    /* Better hover state */
    --skill-border: #22d3ee;
    /* Matching accent */
}

/* =============================
   Header
   ============================= */
header {
    background: var(--header-bg);
    color: #ffffff;
    padding: clamp(15px, 4vw, 25px) 0;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow-color);
}

header h1 {
    margin: 0;
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0.02em;
}

header .container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Theme Toggle */
#theme-toggle {
    background: none;
    border: 2px solid currentColor;
    border-radius: 50%;
    width: var(--theme-toggle-size);
    height: var(--theme-toggle-size);
    padding: 8px;
    cursor: pointer;
    position: fixed;
    top: max(15px, env(safe-area-inset-top, 15px));
    right: max(20px, env(safe-area-inset-right, 20px));
    z-index: 100;
    color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    aspect-ratio: 1;
    min-width: var(--theme-toggle-size);
    min-height: var(--theme-toggle-size);
}

#theme-toggle:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

#theme-toggle:hover .toggle-track {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

#theme-toggle:hover .toggle-thumb {
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
}

#theme-toggle:active {
    transform: scale(0.95);
}

/* Glowing effect when toggling */
.toggle-track {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode .toggle-track {
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

.toggle-thumb {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Icon animations */
.toggle-thumb i {
    transition: all 0.3s ease;
}

.toggle-thumb .fa-sun {
    animation: sunRotate 0.5s ease-in-out;
}

.toggle-thumb .fa-moon {
    animation: moonGlow 0.5s ease-in-out;
}

@keyframes sunRotate {
    0% {
        transform: rotate(0deg);
        opacity: 0;
    }

    50% {
        opacity: 0.5;
    }

    100% {
        transform: rotate(180deg);
        opacity: 1;
    }
}

@keyframes moonGlow {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    50% {
        opacity: 0.5;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Label fade animation */
.toggle-label {
    transition: all 0.3s ease;
}

.toggle-label .light-label,
.toggle-label .dark-label {
    transition: opacity 0.3s ease;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {

    #theme-toggle,
    .toggle-track,
    .toggle-thumb,
    .toggle-thumb i,
    .toggle-label {
        transition: none !important;
        animation: none !important;
    }
}

/* Focus styles for keyboard accessibility */
#theme-toggle:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

#theme-toggle:focus:not(:focus-visible) {
    outline: none;
}

/* =============================
   Sections & Layout
   ============================= */
section {
    margin: var(--section-spacing-desktop) auto;
    padding: var(--section-spacing-desktop);
    background: var(--section-bg);
    border-radius: 8px;
    box-shadow: var(--surface-shadow);
    flex: 1;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) var(--transition-timing);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

section:hover {
    box-shadow: var(--surface-shadow-hover);
    border-color: var(--accent-color);
    background: var(--card-hover-bg);
}

h2 {
    color: var(--accent-color);
    margin-bottom: clamp(15px, 3vw, 25px);
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    font-weight: 600;
    line-height: 1.3;
}

p {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    line-height: 1.6;
}

/* =============================
   Profile Photo
   ============================= */
#profile-photo img,
#profile-photo video {
    display: block;
    margin: 0 auto;
    border-radius: 50%;
    border: 4px solid var(--accent-color);
    width: var(--profile-photo-size);
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    max-width: 256px;
}

.jobtitle {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    color: var(--accent-color);
    text-align: center;
    margin: 15px 0;
    padding: 10px;
    position: relative;
    font-weight: 700;
    letter-spacing: 1px;
    transition: transform 0.3s ease;
}

.jobtitle p {
    margin: 0;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--skill-border) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.jobtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    border-radius: 2px;
}

@media (max-width: 480px) {
    .jobtitle {
        font-size: 1.3em;
        margin: 12px 0;
    }

    .jobtitle::after {
        width: 50px;
        height: 2px;
    }
}

/* =============================
   Contact Buttons
   ============================= */
.contact-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.contact-icons a {
    font-size: clamp(16px, 4vw, 24px);
    background-color: #4CAF50;
    color: white;
    padding: 12px 20px;
    text-decoration: none;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 25px;
    transition: all 0.3s ease;
    min-height: 44px;
    white-space: nowrap;
}

.contact-icons a:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

/* =============================
   About Me Section
   ============================= */
#about-me p {
    text-align: left;
    line-height: 1.8;
    margin: 0 auto;
    padding: 20px;
    font-size: 1.2em;
    max-width: 800px;
    color: var(--text-color);
}

/* =============================
   Skills Section
   ============================= */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--section-spacing-desktop);
    padding: var(--section-spacing-desktop) 0;
}

.skill-category {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--surface-shadow);
    border-left: 4px solid var(--skill-border);
    transition: all var(--transition-speed) var(--transition-timing);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.skill-category:hover {
    box-shadow: var(--surface-shadow-hover);
    border-color: var(--accent-color);
    background: var(--card-hover-bg);
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 1.2em;
}

.skill-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.skill-category li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.skill-category li:before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* =============================
   Projects Section
   ============================= */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--section-spacing-desktop);
    padding: var(--section-spacing-desktop) 0;
}

.project-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: var(--card-padding-md);
    box-shadow: var(--surface-shadow);
    transition: all var(--transition-speed) var(--transition-timing);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.project-card:hover {
    box-shadow: var(--surface-shadow-hover);
    border-color: var(--accent-color);
    background: var(--card-hover-bg);
}

.project-card h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.project-tags span {
    background: var(--accent-color);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
    font-size: 0.9em;
    opacity: 0.9;
    min-height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* =============================
   Education Section
   ============================= */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--section-spacing-desktop);
    padding: var(--section-spacing-desktop) 0;
}

.education-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: var(--card-padding-md);
    box-shadow: var(--surface-shadow);
    border-left: 4px solid var(--accent-color);
    transition: all var(--transition-speed) var(--transition-timing);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.education-card:hover {
    box-shadow: var(--surface-shadow-hover);
    border-color: var(--accent-color);
    background: var(--card-hover-bg);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.education-header h3 {
    color: var(--accent-color);
    font-size: 1.2em;
    margin: 0;
}

.education-year {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9em;
}

.institution {
    color: var(--text-color);
    font-weight: bold;
    margin: 8px 0;
}

.education-details {
    color: var(--text-color);
    line-height: 1.6;
    margin: 10px 0 0;
}

@media (max-width: 768px) {
    .education-grid {
        grid-template-columns: 1fr;
        gap: var(--section-spacing-tablet);
        padding: var(--section-spacing-tablet) 0;
    }
}

@media (max-width: 480px) {
    .education-grid {
        gap: var(--section-spacing-mobile);
        padding: var(--section-spacing-mobile) 0;
    }

    .education-card {
        padding: 15px;
    }

    .education-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .education-year {
        font-size: 0.85em;
    }
}

/* =============================
   Services Section
   ============================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--section-spacing-desktop);
    padding: var(--section-spacing-desktop) 0;
}

.service-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: var(--card-padding-lg);
    box-shadow: var(--surface-shadow);
    transition: all var(--transition-speed) var(--transition-timing);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-color) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--surface-shadow-hover);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-card h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 1.5em;
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
}

.service-card h3 i {
    font-size: 1.4em;
    opacity: 0.9;
    background: var(--accent-color);
    color: white;
    padding: 12px;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.service-card:hover h3 i {
    transform: scale(1.1) rotate(5deg);
}

.service-card p {
    color: var(--text-color);
    line-height: 1.7;
    margin: 15px 0;
    font-size: 1.1em;
    position: relative;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    position: relative;
}

.service-features li {
    padding: 10px 0;
    padding-left: 35px;
    position: relative;
    color: var(--text-color);
    transition: transform 0.3s ease;
}

.service-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    background: rgba(61, 220, 132, 0.1);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.service-features li:hover {
    transform: translateX(5px);
}

.service-features li:hover::before {
    background: var(--accent-color);
    color: white;
}

.service-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    text-decoration: none;
    font-weight: bold;
    background: var(--accent-color);
    padding: var(--space-md) var(--space-lg);
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 44px;
    justify-content: center;
}

.service-link::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: left 0.7s ease;
}

.service-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(61, 220, 132, 0.3);
}

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

.service-link i {
    transition: transform 0.3s ease;
}

.service-link:hover i {
    transform: translateX(5px);
}

/* Special styling for consulting service card */
.consulting-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--card-bg) 100%);
    border: 2px solid var(--accent-color);
    transform: scale(1.02);
}

.consulting-card::before {
    background: linear-gradient(135deg, var(--accent-color) 0%, transparent 150%);
    opacity: 0.03;
}

.consulting-card:hover {
    transform: translateY(-12px) scale(1.04);
    border-color: var(--accent-color);
}

.consulting-card:hover::before {
    opacity: 0.07;
}

.consulting-card h3 {
    font-size: 1.7em;
}

.consulting-card h3 i {
    background: linear-gradient(135deg, var(--accent-color) 30%, #4CAF50 100%);
    padding: 15px;
    border-radius: 12px;
}

.consulting-card .service-features li::before {
    background: linear-gradient(135deg, var(--accent-color) 30%, #4CAF50 100%);
    color: white;
    width: 28px;
    height: 28px;
}

.consulting-card .service-link {
    background: linear-gradient(135deg, var(--accent-color) 30%, #4CAF50 100%);
    padding: 14px 28px;
    font-size: 1.1em;
}

@media (max-width: 768px) {
    .consulting-card {
        transform: scale(1);
    }

    .consulting-card:hover {
        transform: translateY(-8px) scale(1.02);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--section-spacing-tablet);
        padding: var(--section-spacing-tablet) 0;
    }

    .service-card {
        padding: var(--card-padding-md);
    }
}

@media (max-width: 480px) {
    .service-card {
        padding: var(--card-padding-sm);
    }

    .service-card h3 i {
        padding: var(--space-sm);
    }

    .service-features li {
        padding-left: var(--space-lg);
    }
}

/* Dark mode adjustments for services */
body.dark-mode .service-card,
body.dark-mode .project-card,
body.dark-mode .education-card,
body.dark-mode .skill-category {
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

body.dark-mode .service-card:hover,
body.dark-mode .project-card:hover,
body.dark-mode .education-card:hover,
body.dark-mode .skill-category:hover {
    background: rgba(45, 45, 45, 0.95);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-color);
}

/* =============================
   Footer
   ============================= */
footer {
    background: var(--footer-bg);
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 95%;
    margin: 0 auto;
    padding: 15px;
}

.footer-icons {
    display: flex;
    gap: var(--footer-icon-gap);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    padding: 5px;
}

.footer-icons a {
    font-size: var(--footer-icon-size);
    color: #fff;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--footer-icon-padding);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    width: calc(var(--footer-icon-size) + 2 * var(--footer-icon-padding));
    height: calc(var(--footer-icon-size) + 2 * var(--footer-icon-padding));
    min-width: calc(var(--footer-icon-size) + 2 * var(--footer-icon-padding));
    min-height: calc(var(--footer-icon-size) + 2 * var(--footer-icon-padding));
    aspect-ratio: 1;
}

.footer-icons a:hover {
    opacity: 1;
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.2);
}

/* =============================
   Responsive Design System
   ============================= */
@media (max-width: 1200px) {
    main {
        max-width: var(--container-width-lg);
    }
}

@media (max-width: 992px) {
    main {
        max-width: var(--container-width-md);
        padding: 15px;
    }

    .services-grid,
    .projects-grid,
    .education-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
        gap: var(--section-spacing-tablet);
    }
}

@media (max-width: 768px) {

    .container,
    main.container,
    .footer-content {
        width: 96%;
        padding: 0 10px;
    }

    section {
        margin: var(--section-spacing-tablet) auto;
        padding: var(--section-spacing-tablet);
    }

    .services-grid,
    .projects-grid,
    .education-grid {
        grid-template-columns: 1fr;
        gap: var(--section-spacing-tablet);
        padding: var(--section-spacing-tablet) 0;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-icons {
        gap: var(--footer-icon-gap-tablet);
        margin-top: 10px;
    }

    #about-me p {
        font-size: 1.1em;
        padding: 15px;
    }
}

@media (max-width: 480px) {

    .container,
    main.container,
    .footer-content {
        width: 98%;
        padding: 0 5px;
    }

    section {
        margin: var(--section-spacing-mobile) auto;
        padding: var(--section-spacing-mobile);
    }

    #theme-toggle {
        width: var(--theme-toggle-size-mobile);
        height: var(--theme-toggle-size-mobile);
        top: max(10px, env(safe-area-inset-top, 10px));
        right: max(10px, env(safe-area-inset-right, 10px));
        padding: 6px;
    }

    .footer-icons {
        gap: var(--footer-icon-gap-mobile);
        margin-top: 8px;
    }

    .footer-icons a {
        font-size: var(--footer-icon-size-mobile);
    }

    .project-card,
    .skill-category {
        padding: var(--section-spacing-mobile);
    }

    #about-me p {
        font-size: 1em;
        padding: 10px;
    }
}

/* Touch optimization */
@media (hover: none) and (pointer: coarse) {

    .contact-icons a,
    .footer-icons a {
        min-height: 44px;
        min-width: 44px;
        width: 44px;
        height: 44px;
        padding: 10px;
        aspect-ratio: 1;
    }

    #theme-toggle {
        min-height: var(--theme-toggle-size-touch);
        min-width: var(--theme-toggle-size-touch);
        width: var(--theme-toggle-size-touch);
        height: var(--theme-toggle-size-touch);
        padding: 10px;
        aspect-ratio: 1;
    }

    .project-card,
    .skill-category,
    .service-card,
    .education-card {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .project-tags span {
        padding: var(--space-sm) var(--space-md);
        min-height: 36px;
    }

    .service-link {
        min-height: 48px;
        padding: var(--space-md) var(--space-xl);
    }

    .footer-icons {
        gap: var(--footer-icon-gap-mobile);
    }

    .footer-icons a {
        min-height: 44px;
        min-width: 44px;
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .project-card:hover,
    .skill-category:hover {
        transform: none !important;
    }
}

/* Scroll to top button */
#scroll-top {
    position: fixed;
    bottom: max(20px, calc(100vh - 100vh + 20px));
    right: 20px;
    background: var(--accent-color);
    color: white;
    width: var(--circular-button-size);
    height: var(--circular-button-size);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: clamp(1em, 2.5vw, 1.2em);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-bottom: env(safe-area-inset-bottom, 0);
    aspect-ratio: 1;
}

#scroll-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

#scroll-top.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

/* Touch optimization for scroll button */
@media (hover: none) and (pointer: coarse) {
    #scroll-top {
        width: var(--circular-button-size-touch);
        height: var(--circular-button-size-touch);
        bottom: max(25px, calc(100vh - 100vh + 25px));
        right: 25px;
        font-size: clamp(1em, 3vw, 1.1em);
    }
}

/* Landscape mode optimizations */
@media screen and (orientation: landscape) and (max-height: 500px) {
    header {
        padding: var(--space-sm) 0;
    }

    header h1 {
        font-size: clamp(1.2rem, 4vw, 1.8rem);
    }

    #theme-toggle {
        width: var(--theme-toggle-size-mobile);
        height: var(--theme-toggle-size-mobile);
        top: max(8px, env(safe-area-inset-top, 8px));
        right: max(8px, env(safe-area-inset-right, 8px));
    }

    section {
        margin: var(--space-sm) auto;
        padding: var(--space-sm);
    }

    .services-grid,
    .projects-grid,
    .education-grid {
        gap: var(--space-sm);
        padding: var(--space-sm) 0;
    }

    #profile-photo img,
    #profile-photo video {
        width: min(180px, 25vw);
    }

    .jobtitle {
        font-size: clamp(1rem, 3vw, 1.4rem);
        margin: var(--space-sm) 0;
    }

    .contact-icons {
        gap: var(--space-sm);
        margin-top: var(--space-sm);
    }
}

/* Tablet landscape specific optimizations */
@media screen and (orientation: landscape) and (min-width: 768px) and (max-height: 600px) {

    .services-grid,
    .projects-grid,
    .education-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
        gap: var(--space-md);
    }

    .service-card,
    .project-card,
    .education-card {
        padding: var(--card-padding-sm);
    }
}

/* Responsive adjustments for small screens */
@media (max-width: 480px) {
    #scroll-top {
        bottom: max(15px, calc(100vh - 100vh + 15px));
        right: 15px;
        width: var(--circular-button-size-small);
        height: var(--circular-button-size-small);
        font-size: clamp(0.9em, 2.5vw, 1em);
    }

    .contact-icons {
        gap: 10px;
        margin-top: 15px;
    }

    .contact-icons a {
        padding: 10px 16px;
        font-size: clamp(14px, 3.5vw, 18px);
        border-radius: 22px;
    }
}

/* Extra small screens (iPhone SE, etc.) */
@media (max-width: 375px) {

    #profile-photo img,
    #profile-photo video {
        width: var(--profile-photo-size-small);
        border-width: 3px;
    }

    .footer-icons {
        gap: 8px;
    }

    .footer-icons a {
        width: 36px;
        height: 36px;
        min-width: 36px;
        min-height: 36px;
        font-size: 16px;
        padding: 6px;
    }

    .contact-icons a {
        padding: 8px 14px;
        font-size: 14px;
    }

    /* Mobile-specific enhancements */
    body {
        font-size: 16px;
        /* Prevent zoom on iOS */
    }

    /* Improve card interactions on small screens */
    .service-card,
    .project-card,
    .education-card {
        margin-bottom: var(--space-sm);
    }

    /* Better visual feedback for taps */
    .service-card:active,
    .project-card:active,
    .education-card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
}