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

body{
    font-family: 'Geologica', sans-serif;
}
.mobile-menu{
    display: none;
    position: sticky;
    inset: 0;
    z-index: 99;
    background: #0d1f3c;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 30px;
    height: 400px;
    transition: transform 0.3s ease-in-out;
    transform: translateX(100%);
    padding: 50px 0;
}
.mobile-menu.open {
    transform: translateX(0);
    display: flex;
}
.mobile-menu a{
    color: #ffffff;
    text-decoration: none;
}

.mobile-close{
    position: absolute;
    top: 1.5rem;
    right: clamp(1.5rem, 5vw, 4rem);
    font-size: 1.75rem;
    color: #ffffff;
    cursor: pointer;
    background: none;
    border: none;
    line-height: 1;
}
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #0d1f3c;
    border-radius: 2px;
    /* transition: var(--transition); */
}

nav#navbar{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    position: sticky;
    /* top: 0; */
    right: 0;
    left: 0;
    z-index: 100;
    padding: 0 clamp(1.5rem, 5vw, 4rem);
    background: rgba(255, 255, 255, 0.95);
    /* backdrop-filter: blur(12px); */
    border-bottom: 1px solid #e9f6fe;
    transition: box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu{
    display: flex;
    flex-direction: row;
    gap: 50px;
    list-style: none;
    
}
.nav-menu li a,a.nav-logo{
    text-decoration: none;
    font-size: 18px;
    color: #0d1f3c;
}
.nav-menu li a:hover{
    color: #4BAEE8;
    transition: 0.3s;
}

/*HERO SECTION*/
#hero{
    height:87vh;
    width: 100%;
    display: flex;
    align-items: center;
    padding:6rem clamp(1.5rem, 5vw, 4rem) 3rem; 
    position: relative;
    overflow: hidden;
    background: #ffffff;
}
.hero-bg-shape{
    position: absolute;
    top: -10%;
    right: -5%;
    width: clamp(320px, 50vw, 700px);
    height: clamp(320px, 60vh, 750px);
    background:#4baee866;
    border-radius: 40% 60% 70% 30% / 30% 40% 60% 70%;
    opacity: 0.55;
    animation: morfoblod 12s ease-in-out infinite alternate;
    z-index: 0;
}
.hero-bg-shape-1{
    position: absolute;
    top: 55%;
    right: 65%;
    width: clamp(320px, 50vw, 700px);
    height: clamp(320px, 60vh, 750px);
    background:#4baee82b;
    border-radius: 40% 60% 70% 30% / 30% 40% 60% 70%;
    opacity: 0.55;
    animation: morfoblod 12s ease-in-out infinite alternate;
    z-index: 0;
}

@keyframes morfoblod{
    0% {
    border-radius: 40% 60% 70% 30% / 30% 40% 60% 70%;
    }
    50% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }
   100% {
    border-radius: 30% 70% 50% 50% / 50% 60% 40% 50%;
    }
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin-left: 50px;
}
.hero-tag{
    display: inline-block;
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #0d1f3c;
    background: #eef7fd;
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 1.75rem;
}
.hero-title{
    font-size: 60px;
    margin-bottom: 20px;
}
.hero-subtitle{
    font-size: 20px;
    font-weight: 300;
}
.hero-button{
    display: flex;
    gap:25px;
    flex-wrap: wrap;
    margin-top: 25px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 400;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}
.btn-primary{
    color: #ffffff;
    background-color: #0d1f3c;   
}
.btn-primary:hover{
    color:#0d1f3c;
    background-color: #ffffff;
    border: 1px solid #0d1f3c;
    transform:translateY(-3px);
    transition: all 0.3s ease;
}
.btn-secondary{
    color: #0d1f3c;
    background-color: #ffffff;
    border: 1px solid #0d1f3c;
}
.btn-secondary:hover{
    color: #ffffff;
    background-color: #0d1f3c;
    border-color:  #ffffff; 
    transform:translateY(-3px);
}

#about{
    background-color: #eef7fd;
    width: 100%;
    padding: 5rem clamp(1.5rem, 5vw, 4rem) 5rem;
    background: #F7F9FC;
}
.about-row{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}
.about-avatar {
    width: 100%;
    aspect-ratio: 4 / 5;
    max-width: 360px;
    background: var(--sky-light);
    border-radius: 16px 60px 16px 16px;
    position: relative;
    overflow: hidden;
    border: 3px solid var(--sky-light);
}
.section-label{
    color: #4BAEE8;
    font-size: 30px;

}
.section-title{
    font-size: 40px;
    margin-top: 20px;
    color: #0d1f3c;
}
.about-text p{
    color: #0d1f3c;
    font-size: 21px;
    margin-top: 20px;
}
.about-skills{
    margin-top: 20px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}
.skill-pill{
    color: #0d1f3c;
    border: 1px solid #4BAEE8;
    border-radius: 20px;
    padding: 7px 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.skill-pill:hover{
    color: #ffffff;
    background-color: #0d1f3c;
    
}

#education{
    background-color: #ffffff;
    width: 100%;
    padding: 5rem clamp(1.5rem, 5vw, 4rem) 5rem;
    background: #ffffff;
    
}
.edu-title{
    font-size: 50px;
    color: #0d1f3c;
}
.edu-content{
    margin-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 75px;
    

}
.main-info{
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 1px solid #4BAEE8;
    border-radius: 20px;
    padding: 10px 20px;
    box-shadow: 0px 12px 30px rgba(75, 174, 232, 0.35);
    margin-bottom: 0px;
}
.edu-period{
    font-size: 18px;
    color: #0d1f3c;
}
.edu-subtitle{
    font-size: 25px;
    color: #0d1f3c;
    font-weight: 400;
    margin-top: 10px;
}
.edu-text{
    font-size: 18px;
    color: #0d1f3c;
    margin-top: 7px;
}

.projects-temp {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #0d1f3c;
    padding: 100px 20px;
    /* Εδώ βάλε τη δική σου φωτογραφία */
    background-image: url('assets/images/projects-bg.jpg'); 
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Δίνει ένα ωραίο parallax εφέ */
}

.projects-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgb(247 249 252);
    z-index: 1;
}

.projects-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.temp-title {
    font-size: 3rem;
    font-weight: 700;
    margin: 20px 0;
    color: #0d1f3c;
}

.temp-text {
    font-size: 1.2rem;
    font-weight: 300;
    line-height: 1.6;
    color: #0d1f3c;
}

.temp-icon {
    margin-top: 40px;
    opacity: 0.6;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 0.4; }
}

@media (max-width: 768px) {
    .temp-title { font-size: 2rem; }
}

#contact{
    margin-top: 50px;
    background-color: #0d1f3c;
    background-image: url(../images/contact_section_background.svg);
    background-size: 100% auto;
    background-repeat: no-repeat;
    height: auto;
    min-height: 530px;
    width: 100%;
    padding: clamp(4rem, 8vw, 0rem) clamp(1.5rem, 5vw, 4rem);
}


.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}
.con-label{
    font-size: 25px;
    color: #e9f6fe;
    font-weight: 400;    
}
.con-title{
    font-size: 25px;
    color: #e9f6fe;
    font-weight: 600;  
    margin-top: 20px;
}
.con-text{
    font-size: 20px;
    color: #ffffff;
    font-weight: 200;  
    margin-top: 20px;
}
.contact-item{
    margin-top: 30px;
    display: flex;
    gap: 10px;
    align-items: center;
}
.contact-item-label, .contact-item-value{
    color: #ffffff;
    font-weight: 300;
    font-size: 15px;
}
.contact-icon{
    border: 1px solid #4BAEE8;
    padding: 10px 20px;
    border-radius: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-top: 10px;
}
.form-label{
    font-size: 20px;
    color: #ffffff;
    font-weight: 200;
}
.form-input{
    padding: 18px 13px ;
    border-radius: 13px;
}
.form-textarea{
    height: 90px;
    padding: 13px;
    border-radius: 13px;
}
.btn-send{
    padding: 13px 12px;
    font-size: 18px;
    border-radius: 13px;
    color: #0d1f3c;
    margin-top: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-send:hover{
    color: #ffffff;
    background: #0d1f3c;
    border: 1px solid #ffffff;
    transform: translateX(3px);
}
.checkboxes {
    color: #ffffff;
    margin-top: 13px;
}
.wpcf7 form.invalid .wpcf7-response-output, .wpcf7 form.unaccepted .wpcf7-response-output, .wpcf7 form.payment-required .wpcf7-response-output {
    border-color: #ff0000;
    color: #ff0000;
}

/* ─── RESPONSIVE ─────────────────────────────────── */

/* TABLET (max 1024px) */
@media (max-width: 1024px) {

    /* About */
    #about {
        height: auto;
        padding: 5rem var(--pad-x, 2rem);
    }
    .about-row {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .about-avatar {
        max-width: 280px;
        margin: 0 auto;
    }

    /* Education */
    #education {
        height: auto;
        padding: 5rem 2rem;
    }

    /* Contact */
    #contact {
        height: auto;
        padding: 4rem 2rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* MOBILE (max 768px) */
@media (max-width: 768px) {

    /* Navbar */
    .nav-menu {
        display: none;
    }
    .nav-hamburger{
        display: flex;
        flex-direction: column;
        gap: 5px;

    }

    /* Hero */
    #hero {
        height: auto;
        padding: 7rem 1.5rem 4rem;
        align-items: flex-start;
    }
    .hero-content {
        margin-left: 0;
    }
    .hero-title {
        font-size: 42px;
    }
    .hero-subtitle {
        font-size: 17px;
    }
    .hero-tag {
        font-size: 13px;
    }
    .hero-button {
        flex-direction: column;
        gap: 14px;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .hero-bg-shape {
        width: 260px;
        height: 300px;
        top: -5%;
        right: -10%;
    }
    .hero-bg-shape-1 {
        display: none;
    }

    /* About */
    #about {
        height: auto;
        padding: 4rem 1.5rem;
    }
    .about-row {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about-avatar {
        max-width: 240px;
        margin: 0 auto;
    }
    .section-title {
        font-size: 30px;
    }
    .section-label {
        font-size: 22px;
    }
    .about-text p {
        font-size: 17px;
    }

    /* Education */
    #education {
        height: auto;
        padding: 4rem 1.5rem;
    }
    .edu-title {
        font-size: 36px;
    }
    .edu-content {
        margin-top: 40px;
        gap: 30px;
    }
    .edu-subtitle {
        font-size: 19px;
    }

    /* Contact */
    #contact {
        height: auto;
        margin-top: 0;
        padding: 4rem 1.5rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .con-label {
        font-size: 20px;
    }
    .con-title {
        font-size: 22px;
    }
    .con-text {
        font-size: 17px;
    }
    .form-input,
    .form-textarea {
        font-size: 16px;
    }
    .btn-send {
        width: 100%;
    }

}