/* Theme: Aquarium - Day 27 (Letter A): Inspired by underwater sanctuaries, marine life elegance, coral reef colors, ocean depths, flowing water, bioluminescent creatures, tropical fish patterns, aquatic serenity, glass tank reflections, peaceful sea gardens */

@import url('https://fonts.googleapis.com/css2?family=Comfortaa:wght@300;400;500;600;700&family=Quicksand:wght@300;400;500;600;700&display=swap');

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

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

body {
    font-family: 'Quicksand', sans-serif;
    font-size: 17.2px;
    line-height: 1.82;
    color: #0d3b4f;
    background: linear-gradient(160deg, #e8f8f5 0%, #d4f1f4 22%, #b8e6f0 48%, #daf0f7 72%, #f0fbfc 100%);
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, rgba(0, 168, 150, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(41, 128, 185, 0.07) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(26, 188, 156, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
    animation: aquariumBubbles 45s ease-in-out infinite;
}

@keyframes aquariumBubbles {
    0%, 100% {
        opacity: 1;
        transform: translateY(0);
    }
    50% {
        opacity: 0.75;
        transform: translateY(-25px);
    }
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 125px,
            rgba(0, 168, 150, 0.025) 125px,
            rgba(0, 168, 150, 0.025) 126px
        );
    pointer-events: none;
    z-index: 0;
    animation: aquariumFlow 30s linear infinite;
}

@keyframes aquariumFlow {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(125px);
    }
}

#topnav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(232, 248, 245, 0.88);
    backdrop-filter: blur(32px);
    border-bottom: 3px solid rgba(0, 168, 150, 0.22);
    box-shadow: 0 8px 42px rgba(13, 59, 79, 0.12);
    transition: all 0.48s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#topnav.scrolled {
    background: rgba(232, 248, 245, 0.95);
    box-shadow: 0 12px 52px rgba(13, 59, 79, 0.18);
    border-bottom-color: rgba(0, 168, 150, 0.35);
}

.nav-container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 4.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 85px;
}

.logo h1 {
    font-family: 'Comfortaa', cursive;
    font-size: 1.92rem;
    font-weight: 700;
    color: #0d3b4f;
    margin: 0;
    letter-spacing: 0.45px;
    position: relative;
    padding-left: 3.55rem;
}

.logo h1::before {
    content: '🐠';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2.35rem;
    animation: fishSwim 6.5s ease-in-out infinite;
}

@keyframes fishSwim {
    0%, 100% {
        transform: translateY(-50%) translateX(0) scaleX(1);
    }
    25% {
        transform: translateY(-50%) translateX(8px) scaleX(1);
    }
    50% {
        transform: translateY(-50%) translateX(0) scaleX(-1);
    }
    75% {
        transform: translateY(-50%) translateX(-8px) scaleX(-1);
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.55rem;
}

.nav-menu li a {
    display: block;
    padding: 0.95rem 2.15rem;
    color: #0d3b4f;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    transition: all 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    letter-spacing: 0.65px;
    border-radius: 35px;
    border: 2px solid transparent;
}

.nav-menu li a::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #00a896 0%, #1abc9c 50%, #2980b9 100%);
    transition: width 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 2px;
}

.nav-menu li a:hover::before,
.nav-menu li a.active::before {
    width: calc(100% - 4.3rem);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: #00a896;
    background: rgba(0, 168, 150, 0.08);
    border-color: rgba(0, 168, 150, 0.22);
    transform: translateY(-2px);
}

.mobile-toggle {
    display: none;
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 100%);
    border: none;
    color: #e8f8f5;
    font-size: 1.85rem;
    width: 62px;
    height: 62px;
    cursor: pointer;
    transition: all 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 50%;
    box-shadow: 0 12px 42px rgba(0, 168, 150, 0.35);
}

.mobile-toggle:hover {
    transform: scale(1.12) rotate(90deg);
    box-shadow: 0 18px 58px rgba(0, 168, 150, 0.48);
}

#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 165px 0 125px;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '🐟';
    position: absolute;
    top: 18%;
    right: 12%;
    font-size: 6.5rem;
    opacity: 0.12;
    animation: floatFish1 18s ease-in-out infinite;
}

#hero::after {
    content: '🐡';
    position: absolute;
    bottom: 22%;
    left: 8%;
    font-size: 7.2rem;
    opacity: 0.1;
    animation: floatFish2 22s ease-in-out infinite;
}

@keyframes floatFish1 {
    0%, 100% {
        transform: translate(0, 0) rotate(-5deg);
        opacity: 0.12;
    }
    50% {
        transform: translate(-85px, 65px) rotate(5deg);
        opacity: 0.18;
    }
}

@keyframes floatFish2 {
    0%, 100% {
        transform: translate(0, 0) rotate(8deg);
        opacity: 0.1;
    }
    50% {
        transform: translate(95px, -55px) rotate(-8deg);
        opacity: 0.16;
    }
}

.hero-content {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 4.25rem;
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: 8.75rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: aquariumRise 1.55s cubic-bezier(0.34, 1.56, 0.64, 1) 0s both;
}

@keyframes aquariumRise {
    0% {
        opacity: 0;
        transform: translateY(95px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text h1 {
    font-family: 'Comfortaa', cursive;
    font-size: 5.85rem;
    font-weight: 700;
    line-height: 1.12;
    margin-bottom: 3.45rem;
    color: #0d3b4f;
    letter-spacing: -0.85px;
}

.hero-text h1 br {
    display: block;
}

.hero-subtitle {
    font-size: 1.75rem;
    color: #2c5f6f;
    margin-bottom: 4.85rem;
    line-height: 1.62;
    font-weight: 500;
    letter-spacing: 0.35px;
}

.hero-buttons {
    display: flex;
    gap: 2.85rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 1.62rem 4.35rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.52s cubic-bezier(0.34, 1.56, 0.64, 1);
    font-size: 1.08rem;
    letter-spacing: 0.65px;
    font-family: 'Quicksand', sans-serif;
    position: relative;
    overflow: hidden;
    border: 3px solid transparent;
    border-radius: 55px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.28);
    transform: translate(-50%, -50%);
    transition: width 0.85s ease, height 0.85s ease;
}

.btn:hover::before {
    width: 350px;
    height: 350px;
}

.btn-primary {
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 50%, #2ecc71 100%);
    color: #e8f8f5;
    box-shadow: 0 18px 58px rgba(0, 168, 150, 0.38);
}

.btn-primary:hover {
    transform: translateY(-6px);
    box-shadow: 0 26px 75px rgba(0, 168, 150, 0.52);
}

.btn-secondary {
    background: rgba(232, 248, 245, 0.98);
    color: #00a896;
    border: 3px solid #00a896;
    box-shadow: 0 14px 48px rgba(0, 168, 150, 0.25);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
    color: #e8f8f5;
    border-color: transparent;
    transform: translateY(-6px);
    box-shadow: 0 22px 62px rgba(41, 128, 185, 0.42);
}

.hero-image {
    animation: aquariumRise 1.55s cubic-bezier(0.34, 1.56, 0.64, 1) 0.32s both;
}

.profile-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(28px);
    padding: 3.55rem;
    box-shadow: 
        0 0 0 4px rgba(0, 168, 150, 0.18),
        0 32px 95px rgba(13, 59, 79, 0.22);
    transition: all 0.62s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    border-radius: 42px;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 25%, #2ecc71 50%, #2980b9 75%, #3498db 100%);
    border-radius: 42px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.62s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.profile-card::after {
    content: '🌊';
    position: absolute;
    bottom: 58px;
    right: 58px;
    font-size: 7.85rem;
    opacity: 0.055;
}

.profile-card:hover {
    transform: translateY(-22px) scale(1.032);
    box-shadow: 
        0 0 0 4px rgba(0, 168, 150, 0.32),
        0 48px 142px rgba(13, 59, 79, 0.32);
}

.profile-card:hover::before {
    opacity: 1;
}

.profile-card img {
    width: 100%;
    margin-bottom: 3.15rem;
    box-shadow: 0 28px 88px rgba(13, 59, 79, 0.24);
    border-radius: 32px;
}

.profile-details h3 {
    font-family: 'Comfortaa', cursive;
    font-size: 3.25rem;
    margin-bottom: 1.25rem;
    color: #0d3b4f;
    font-weight: 700;
    letter-spacing: -0.35px;
}

.profile-details p {
    color: #2c5f6f;
    margin-bottom: 3.35rem;
    line-height: 1.62;
    font-weight: 500;
}

.social-links a {
    display: inline-block;
    padding: 1.62rem 4.05rem;
    background: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
    color: #e8f8f5;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.65px;
    transition: all 0.52s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 42px;
    box-shadow: 0 18px 58px rgba(41, 128, 185, 0.38);
    font-family: 'Quicksand', sans-serif;
}

.social-links a:hover {
    background: linear-gradient(135deg, #1f6391 0%, #2980b9 100%);
    transform: translateY(-5px);
    box-shadow: 0 26px 75px rgba(41, 128, 185, 0.55);
}

section {
    padding: 145px 0;
    position: relative;
    z-index: 1;
}

.container {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 4.25rem;
}

.section-header {
    text-align: center;
    margin-bottom: 8.25rem;
    position: relative;
}

.section-header::before {
    content: '◦ ◦ ◦';
    position: absolute;
    top: -78px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.85rem;
    letter-spacing: 3.85rem;
    opacity: 0.55;
    color: #00a896;
}

.section-header h2 {
    font-family: 'Comfortaa', cursive;
    font-size: 5.65rem;
    font-weight: 700;
    line-height: 1.15;
    color: #0d3b4f;
    letter-spacing: -0.95px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -38px;
    left: 50%;
    transform: translateX(-50%);
    width: 175px;
    height: 5px;
    background: linear-gradient(90deg, transparent 0%, #00a896 25%, #1abc9c 50%, #00a896 75%, transparent 100%);
    border-radius: 3px;
}

#experience {
    background: rgba(255, 255, 255, 0.42);
    backdrop-filter: blur(22px);
}

.timeline {
    position: relative;
    max-width: 1440px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 365px;
    top: 0;
    bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, #00a896 0%, #1abc9c 25%, #2ecc71 50%, #2980b9 75%, #3498db 100%);
    border-radius: 3px;
    opacity: 0.42;
}

.timeline-item {
    display: grid;
    grid-template-columns: 715px 1fr;
    gap: 8.25rem;
    margin-bottom: 7.95rem;
    position: relative;
}

.timeline-year {
    font-family: 'Comfortaa', cursive;
    font-size: 8.45rem;
    font-weight: 700;
    color: rgba(0, 168, 150, 0.15);
    position: relative;
    z-index: 2;
    text-align: right;
    padding-right: 7.95rem;
    letter-spacing: -3.85px;
}

.timeline-year::after {
    content: '';
    position: absolute;
    right: -152px;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 100%);
    border-radius: 50%;
    box-shadow: 
        0 0 0 10px rgba(232, 248, 245, 1),
        0 0 0 14px rgba(0, 168, 150, 0.22),
        0 0 28px rgba(0, 168, 150, 0.38);
    animation: aquariumPulse 4.5s ease-in-out infinite;
}

@keyframes aquariumPulse {
    0%, 100% {
        box-shadow: 
            0 0 0 10px rgba(232, 248, 245, 1),
            0 0 0 14px rgba(0, 168, 150, 0.22),
            0 0 28px rgba(0, 168, 150, 0.38);
    }
    50% {
        box-shadow: 
            0 0 0 10px rgba(232, 248, 245, 1),
            0 0 0 24px rgba(46, 204, 113, 0.35),
            0 0 42px rgba(46, 204, 113, 0.55);
    }
}

.timeline-content {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(25px);
    padding: 4.45rem;
    transition: all 0.58s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.12),
        0 28px 88px rgba(13, 59, 79, 0.18);
    position: relative;
    border-radius: 32px;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: linear-gradient(180deg, #00a896 0%, #1abc9c 50%, #2ecc71 100%);
    border-radius: 32px 0 0 32px;
    opacity: 0;
    transition: opacity 0.58s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-content:hover {
    transform: translateX(25px);
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.28),
        0 42px 118px rgba(13, 59, 79, 0.28);
    background: rgba(255, 255, 255, 0.95);
}

.timeline-content:hover::before {
    opacity: 1;
}

.timeline-content h3 {
    font-family: 'Comfortaa', cursive;
    font-size: 3.15rem;
    margin-bottom: 1.08rem;
    color: #0d3b4f;
    font-weight: 700;
    letter-spacing: -0.35px;
}

.timeline-content h4 {
    color: #00a896;
    font-size: 1.62rem;
    margin-bottom: 2.55rem;
    font-weight: 700;
    letter-spacing: 0.45px;
}

.timeline-content p {
    color: #2c5f6f;
    line-height: 1.82;
    margin: 0;
}

.timeline-content a {
    color: #2980b9;
    text-decoration: none;
    font-weight: 700;
    border-bottom: 2px solid transparent;
    transition: all 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-content a:hover {
    border-bottom-color: #2980b9;
    color: #00a896;
}

#ai {
    background: rgba(212, 241, 244, 0.52);
    backdrop-filter: blur(22px);
}

.ai-projects {
    display: grid;
    gap: 5.95rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(25px);
    padding: 5.95rem;
    transition: all 0.58s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.12),
        0 32px 98px rgba(13, 59, 79, 0.19);
    border-radius: 38px;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg, #00a896 0%, #1abc9c 25%, #2ecc71 50%, #2980b9 75%, #3498db 100%);
    border-radius: 38px 38px 0 0;
}

.project-card::after {
    content: '🐚';
    position: absolute;
    top: 68px;
    right: 68px;
    font-size: 8.65rem;
    opacity: 0.048;
}

.project-card:hover {
    transform: translateY(-18px);
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.25),
        0 48px 138px rgba(13, 59, 79, 0.28);
    background: rgba(255, 255, 255, 0.95);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 2.95rem;
    margin-bottom: 2.15rem;
}

.project-header h3 {
    font-family: 'Comfortaa', cursive;
    font-size: 4.35rem;
    color: #0d3b4f;
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.65px;
}

.project-client {
    color: #00a896;
    font-weight: 700;
    font-size: 1.62rem;
    margin-bottom: 3.55rem;
    letter-spacing: 0.45px;
}

.project-card > p {
    color: #2c5f6f;
    line-height: 1.82;
    margin-bottom: 4.25rem;
}

.project-impact {
    background: linear-gradient(135deg, rgba(0, 168, 150, 0.08) 0%, rgba(46, 204, 113, 0.08) 100%);
    padding: 3.25rem;
    color: #0d3b4f;
    line-height: 1.82;
    border-radius: 25px;
    border-left: 8px solid #00a896;
}

.project-impact strong {
    color: #2980b9;
    font-weight: 700;
}

#speaking {
    background: rgba(255, 255, 255, 0.42);
    backdrop-filter: blur(22px);
}

.speaking-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5.95rem;
}

.year-section {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(25px);
    padding: 4.95rem;
    transition: all 0.58s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.12),
        0 28px 88px rgba(13, 59, 79, 0.18);
    border-radius: 32px;
    position: relative;
}

.year-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #00a896 0%, #1abc9c 50%, #2ecc71 100%);
    border-radius: 32px 32px 0 0;
    opacity: 0.38;
    transition: opacity 0.58s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.year-section:hover {
    transform: translateY(-18px);
    box-shadow: 
        0 0 0 2px rgba(0, 168, 150, 0.25),
        0 42px 118px rgba(13, 59, 79, 0.28);
    background: rgba(255, 255, 255, 0.95);
}

.year-section:hover::before {
    opacity: 1;
}

.year-section h3 {
    font-family: 'Comfortaa', cursive;
    font-size: 5.45rem;
    margin-bottom: 4.25rem;
    color: #0d3b4f;
    text-align: center;
    padding-bottom: 3.25rem;
    border-bottom: 4px solid rgba(0, 168, 150, 0.22);
    font-weight: 700;
    letter-spacing: -0.75px;
}

.year-section.books {
    grid-column: span 2;
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 50%, #2ecc71 100%);
}

.year-section.books::before {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.42) 0%, rgba(255, 255, 255, 0.42) 100%);
}

.year-section.books h3 {
    color: #e8f8f5;
    border-bottom-color: rgba(232, 248, 245, 0.28);
}

.achievements {
    list-style: none;
}

.achievements li {
    padding: 2.15rem 0;
    color: #2c5f6f;
    border-bottom: 2px solid rgba(13, 59, 79, 0.08);
    line-height: 1.82;
    position: relative;
    padding-left: 3.85rem;
}

.achievements li::before {
    content: '🐠';
    position: absolute;
    left: 0;
    top: 2.15rem;
    font-size: 1.55rem;
}

.year-section.books .achievements li {
    color: rgba(232, 248, 245, 0.96);
    border-bottom-color: rgba(232, 248, 245, 0.22);
}

.year-section.books .achievements li::before {
    filter: brightness(0) invert(1);
}

.achievements li:last-child {
    border-bottom: none;
}

.achievements strong {
    color: #0d3b4f;
    font-weight: 700;
}

.year-section.books .achievements strong {
    color: #e8f8f5;
}

#personal {
    background: rgba(212, 241, 244, 0.52);
    backdrop-filter: blur(22px);
}

#contact {
    background: linear-gradient(135deg, rgba(0, 168, 150, 0.055) 0%, rgba(46, 204, 113, 0.055) 100%);
    backdrop-filter: blur(22px);
}

.contact-card {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(38px);
    padding: 9.05rem 8.35rem;
    text-align: center;
    box-shadow: 
        0 0 0 3px rgba(0, 168, 150, 0.18),
        0 48px 145px rgba(13, 59, 79, 0.22);
    max-width: 1440px;
    margin: 0 auto;
    border-radius: 48px;
}

.contact-card h2 {
    font-family: 'Comfortaa', cursive;
    font-size: 6.85rem;
    margin-bottom: 4.25rem;
    color: #0d3b4f;
    font-weight: 700;
    letter-spacing: -1.15px;
}

.contact-card > p {
    font-size: 1.85rem;
    color: #2c5f6f;
    line-height: 1.82;
    margin-bottom: 7.15rem;
    max-width: 1300px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 4.25rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 2.55rem;
    padding: 2.55rem 5.95rem;
    background: linear-gradient(135deg, #00a896 0%, #1abc9c 50%, #2ecc71 100%);
    color: #e8f8f5;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.65px;
    transition: all 0.52s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 55px;
    box-shadow: 0 28px 88px rgba(0, 168, 150, 0.38);
    font-family: 'Quicksand', sans-serif;
}

.contact-link:hover {
    background: linear-gradient(135deg, #008c7a 0%, #16a085 50%, #27ae60 100%);
    transform: translateY(-8px);
    box-shadow: 0 42px 118px rgba(0, 168, 150, 0.55);
}

.contact-link .icon {
    font-size: 2.85rem;
}

#footer {
    background: #0d3b4f;
    padding: 7.15rem 0;
    text-align: center;
    color: rgba(232, 248, 245, 0.72);
    border-top: 4px solid rgba(0, 168, 150, 0.28);
}

#footer a {
    color: #1abc9c;
    text-decoration: none;
    transition: color 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
    font-weight: 700;
}

#footer a:hover {
    color: #2ecc71;
}

@media screen and (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 7.15rem;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        max-width: 715px;
        margin: 0 auto;
    }

    .speaking-grid {
        grid-template-columns: 1fr;
    }

    .year-section.books {
        grid-column: span 1;
    }
}

@media screen and (max-width: 900px) {
    .nav-container {
        padding: 0 3.35rem;
        height: 78px;
    }

    html {
        scroll-padding-top: 78px;
    }

    .nav-menu {
        position: fixed;
        top: 78px;
        left: 0;
        right: 0;
        background: rgba(232, 248, 245, 0.98);
        backdrop-filter: blur(28px);
        flex-direction: column;
        padding: 4.95rem;
        gap: 0;
        box-shadow: 0 38px 95px rgba(13, 59, 79, 0.22);
        transform: translateY(-150%);
        transition: transform 0.62s cubic-bezier(0.34, 1.56, 0.64, 1);
        border-bottom: 3px solid rgba(0, 168, 150, 0.28);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu li a {
        width: 100%;
        text-align: center;
        padding: 1.78rem;
        border-bottom: 2px solid rgba(13, 59, 79, 0.08);
    }

    .nav-menu li a::before {
        display: none;
    }

    .mobile-toggle {
        display: block;
    }

    .hero-text h1 {
        font-size: 4.95rem;
    }

    .section-header h2 {
        font-size: 4.55rem;
    }

    .timeline::before {
        left: 62px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 4.95rem;
        margin-bottom: 7.95rem;
        padding-left: 10.25rem;
    }

    .timeline-year {
        text-align: left;
        padding-right: 0;
    }

    .timeline-year::after {
        left: -152px;
        right: auto;
    }

    .contact-card {
        padding: 7.45rem 5.95rem;
    }
}

@media screen and (max-width: 600px) {
    .container {
        padding: 0 2.95rem;
    }

    .nav-container {
        padding: 0 2.95rem;
        height: 72px;
    }

    html {
        scroll-padding-top: 72px;
    }

    #hero {
        padding: 152px 0 122px;
    }

    .hero-text h1 {
        font-size: 3.85rem;
    }

    .hero-subtitle {
        font-size: 1.48rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    section {
        padding: 122px 0;
    }

    .section-header {
        margin-bottom: 7.15rem;
    }

    .section-header h2 {
        font-size: 3.75rem;
    }

    .profile-card {
        padding: 2.95rem;
    }

    .timeline-item {
        padding-left: 7.95rem;
    }

    .timeline-content {
        padding: 3.65rem;
    }

    .project-card {
        padding: 4.95rem 3.65rem;
    }

    .contact-card {
        padding: 6.65rem 3.65rem;
    }

    .contact-card h2 {
        font-size: 5.15rem;
    }

    .contact-info {
        flex-direction: column;
    }

    .contact-link {
        justify-content: center;
        padding: 1.78rem 3.65rem;
        font-size: 1.02rem;
    }
}