/* ============================================================
   VARIABLES - CSS custom properties for responsive design
   ============================================================ */

:root {
    --clr-navy: #070f2b;
    --clr-gradient-mid: #3572ef;
    --clr-gradient-end: #3abef9;
    --clr-linkedin: #2856c7;
    --clr-white: #ffffff;

    /* Mobile-first responsive values */
    --lang-selector-top: 15px;
    --lang-selector-right: 15px;
    --lang-selector-width: 100px;
    --lang-selector-padding: 6px 28px 6px 10px;
    --lang-selector-font-size: 12px;
    --lang-option-padding: 6px 10px;
    --lang-arrow-size: 8px;
    --lang-arrow-position: right 8px center;
    --btn-icon-size: 18px;
    --btn-icon-margin: 6px;
    --container-padding: 60px 15px 1.5rem 15px;
}

/* Desktop overrides */
@media (min-width: 992px) {
    :root {
        --lang-selector-top: 20px;
        --lang-selector-right: 20px;
        --lang-selector-width: 150px;
        --lang-selector-padding: 10px 40px 10px 16px;
        --lang-selector-font-size: 15px;
        --lang-option-padding: 10px 16px;
        --lang-arrow-size: 12px;
        --lang-arrow-position: right 12px center;
        --btn-icon-size: 20px;
        --btn-icon-margin: 8px;
        --container-padding: 3rem 1.5rem;
    }
}

/* ============================================================
   BASE
   ============================================================ */

a {
    text-decoration: none;
}

body {
    overflow-x: hidden;
    max-width: 100vw;
}

/* ============================================================
   HERO SECTION
   ============================================================ */

.hero {
    background: linear-gradient(
        300deg,
        var(--clr-navy),
        var(--clr-gradient-mid),
        var(--clr-gradient-end)
    );
    background-size: 180% 180%;
    animation: gradient-animation 10s ease infinite;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    overflow-x: hidden;
}

@keyframes gradient-animation {
    0%,
    100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@media (min-width: 992px) {
    .hero {
        align-items: center;
    }
}

.hero__container {
    padding: var(--container-padding);
}

.hero__profile-image {
    display: block;
    margin: 0 auto 1.5rem auto;
    width: 100%;
    max-width: 350px;
    border-radius: 2%;
}

@media (max-width: 576px) {
    .hero__profile-image {
        width: calc(100vw - 30px);
        max-width: calc(100vw - 30px);
    }
}

.hero__title {
    color: var(--clr-navy);
}

.hero__text {
    color: var(--clr-white);
    white-space: nowrap; /* Keep text on single line */
}

@media (max-width: 576px) {
    .hero__text {
        font-size: 0.95rem;
    }
}

@media (max-width: 400px) {
    .hero__text {
        font-size: 0.85rem;
    }
}

/* ============================================================
   LANGUAGE SELECTOR (BEM naming: lang-selector)
   ============================================================ */

.lang-selector {
    position: absolute;
    top: var(--lang-selector-top);
    right: var(--lang-selector-right);
    z-index: 1000;
    width: var(--lang-selector-width);
}

.lang-selector__trigger {
    width: 100%;
    padding: var(--lang-selector-padding);
    font-size: var(--lang-selector-font-size);
    font-weight: 600;
    color: white;
    background-color: rgba(255, 255, 255, 0.15);
    background-image: url("../assets/images/arrow-down.svg");
    background-repeat: no-repeat;
    background-position: var(--lang-arrow-position);
    background-size: var(--lang-arrow-size);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    cursor: pointer;
    user-select: none;
    transition: all 0.3s ease;
}

.lang-selector__trigger:hover {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.lang-selector--open .lang-selector__trigger {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.lang-selector__dropdown {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.lang-selector--open .lang-selector__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-selector__option {
    padding: var(--lang-option-padding);
    font-size: var(--lang-selector-font-size);
    font-weight: 600;
    color: white;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
}

.lang-selector__option:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.lang-selector__option--selected {
    background-color: rgba(255, 255, 255, 0.25);
}

/* ============================================================
   BUTTONS (BEM naming: btn--linkedin, btn--github)
   ============================================================ */

.btn__icon {
    width: var(--btn-icon-size);
    height: var(--btn-icon-size);
    margin-right: var(--btn-icon-margin);
    filter: brightness(0) invert(1);
}

.btn--linkedin {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background-color: var(--clr-linkedin);
    color: var(--clr-white);
    border: 2px solid var(--clr-linkedin);
}

.btn--linkedin:hover {
    background-color: var(--clr-navy);
    color: var(--clr-white);
}

.btn--linkedin:focus,
.btn--linkedin:active {
    background-color: var(--clr-white);
    color: var(--clr-navy);
    box-shadow: 0 0 0 0.2rem rgba(0, 119, 181, 0.25);
}

.btn--linkedin:focus .btn__icon,
.btn--linkedin:active .btn__icon {
    filter: brightness(0) invert(0);
}

.btn--github {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    background-color: transparent;
    color: var(--clr-white);
    border: 2px solid var(--clr-white);
}

.btn--github:hover {
    background-color: var(--clr-white);
    color: var(--clr-navy);
    border-color: var(--clr-white);
}

.btn--github:focus,
.btn--github:active {
    background-color: var(--clr-navy);
    color: var(--clr-white);
    border-color: var(--clr-navy);
}

.btn--github:hover .btn__icon {
    filter: brightness(0) invert(0);
}

.btn--github:focus .btn__icon,
.btn--github:active .btn__icon {
    filter: brightness(0) invert(1);
}

/* Desktop button sizing */
@media (min-width: 992px) {
    .btn--linkedin,
    .btn--github {
        width: auto;
        min-width: 140px;
    }
}