/* styles/component.css */

/* ------------------------------------------- */
/* 1. Buttons                                  */
/* ------------------------------------------- */
.button {
    display: inline-block;
    padding: 1.1rem 2.5rem; /* More padding for a substantial feel */
    border-radius: 10px; /* More rounded */
    font-weight: var(--fw-medium); /* Slightly lighter weight for buttons */
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: var(--fs-base);
    border: 2px solid transparent; /* Default transparent border */
    box-shadow: 0 5px 15px var(--clr-shadow-light); /* Subtle button shadow */
}

.button-primary {
    background-color: var(--clr-accent);
    color: var(--clr-background-primary);
    border-color: var(--clr-accent);
}

.button-primary:hover {
    background-color: var(--clr-accent-hover);
    border-color: var(--clr-accent-hover);
    transform: translateY(-4px); /* More pronounced lift */
    box-shadow: 0 10px 20px var(--clr-shadow-medium);
}

.button-secondary {
    background-color: transparent;
    color: var(--clr-accent);
    border-color: var(--clr-accent);
}

.button-secondary:hover {
    background-color: var(--clr-accent);
    color: var(--clr-background-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px var(--clr-shadow-medium);
}

.button-tertiary {
    background-color: var(--clr-background-primary);
    color: var(--clr-text-primary);
    border-color: var(--clr-border);
    box-shadow: 0 5px 15px var(--clr-shadow-light);
}

.button-tertiary:hover {
    background-color: var(--clr-background-secondary);
    border-color: var(--clr-accent);
    color: var(--clr-accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px var(--clr-shadow-medium);
}

.button-small {
    padding: 0.8rem 1.6rem;
    font-size: 0.95rem;
    border-radius: 8px;
}

/* ------------------------------------------- */
/* 2. Header & Desktop Navigation              */
/* ------------------------------------------- */

.site-header {
    background-color: var(--clr-background-primary);
    padding: 1.8rem 0; /* More padding */
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 5px 20px var(--clr-shadow-light); /* Clearer shadow */
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    height: 50px; /* Larger logo */
    width: auto;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 3.5rem; /* More space between navigation items */
}

.main-nav a {
    font-weight: var(--fw-medium); /* Slightly lighter weight for nav links */
    color: var(--clr-text-primary);
    position: relative;
    padding-bottom: 0.5rem; /* More space for underline effect */
    font-size: 1.1rem;
}

.main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    display: block;
    margin-top: 5px;
    left: 50%; /* Start from center */
    transform: translateX(-50%); /* Center the underline */
    background: var(--clr-accent);
    transition: width 0.3s ease; /* Only animate width */
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* Hamburger for fullscreen menu (hidden on desktop, shown on mobile via bottom nav) */
.nav-toggle-fullscreen {
    display: none; /* Always hidden on desktop, only used for JS toggle */
}



/* ------------------------------------------- */
/* 4. Mobile Fixed Bottom Navigation           */
/* ------------------------------------------- */
.nav-bottom-mobile {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--clr-background-primary);
    box-shadow: 0 -5px 20px var(--clr-shadow-light); /* Shadow on top */
    z-index: 900; /* Below fullscreen menu, above content */
    display: none; /* Hidden by default, shown on mobile via media query */
    padding: 0.8rem 0; /* Vertical padding */
    border-top-left-radius: 15px; /* Subtle rounded corners */
    border-top-right-radius: 15px;
}

.nav-bottom-mobile ul {
    display: flex;
    justify-content: space-around; /* Distribute items evenly */
    align-items: center;
    list-style: none;
    width: 100%;
    padding: 0 0.5rem; /* Slightly less padding */
}

.nav-bottom-mobile li {
    flex: 1; /* Equal width for each item */
    text-align: center;
}

/* Styling for nav items (links and the menu button) */
.nav-bottom-mobile a,
.nav-bottom-mobile .nav-toggle-mobile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center; /* Center content vertically */
    gap: 0.2rem; /* Reduced space between icon and text */
    color: var(--clr-text-tertiary); /* Default color for inactive */
    font-size: 0.75rem; /* Smaller font size */
    font-weight: var(--fw-medium);
    transition: color 0.3s ease, background-color 0.3s ease;
    padding: 0.6rem 0.2rem; /* Adjusted padding for a compact feel */
    border-radius: 12px; /* Nicer rounded corners for tap area */
    min-height: 60px; /* Ensure consistent height for tap targets */
    cursor: pointer; /* Indicate clickable */
    border: none; /* Remove default button border */
    background: none; /* Remove default button background */
    width: 100%; /* Fill available width in li */
}

.nav-bottom-mobile a:hover,
.nav-bottom-mobile a.active,
.nav-bottom-mobile .nav-toggle-mobile:hover {
    color: var(--clr-accent);
    background-color: rgba(0, 123, 255, 0.05); /* Very light accent background on hover/active */
}

.nav-bottom-mobile a img {
    width: 24px; /* Icon size */
    height: 24px;
    /* Filter to change SVG color dynamically based on text-tertiary */
    filter: invert(50%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(0%) contrast(100%);
    transition: filter 0.3s ease;
}

.nav-bottom-mobile a:hover img,
.nav-bottom-mobile a.active img,
.nav-bottom-mobile .nav-toggle-mobile:hover img {
    /* Filter to change SVG color dynamically to accent color */
    filter: invert(39%) sepia(61%) saturate(2000%) hue-rotate(195deg) brightness(97%) contrast(101%);
}

/* Hamburger icon within the bottom nav toggle */
.nav-bottom-mobile .nav-toggle-mobile {
    display: none; /* Hide default hamburger bars, we use an icon img instead */
}


/* ------------------------------------------- */
/* 5. Card Components (Skills, Projects, Achievements) */
/* ------------------------------------------- */

/* Shared Card Base Style */
.skill-category-card,
.project-card,
.achievement-card {
    background-color: var(--clr-background-primary);
    border-radius: 15px; /* Consistent rounded corners */
    box-shadow: 0 10px 30px var(--clr-shadow-medium); /* Consistent shadow */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden; /* Ensures content respects border-radius */
}

.skill-category-card:hover,
.project-card:hover,
.achievement-card:hover {
    transform: translateY(-10px); /* Lift effect on hover */
    box-shadow: 0 20px 50px var(--clr-shadow-strong); /* More prominent shadow on hover */
}

/* Skill Category Card Specifics */
.skill-category-card {
    padding: 3rem; /* Generous padding */
    text-align: center;
}

.skill-category-card h3 {
    color: var(--clr-accent);
    margin-bottom: 2.5rem;
    font-size: 1.8rem;
    position: relative;
    display: inline-block;
    padding-bottom: 0.6rem;
}

.skill-category-card h3::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 80px;
    height: 4px;
    background-color: var(--clr-accent);
    border-radius: 2px;
}

.skill-items-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 2.5rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100px;
    height: 100px;
}

.skill-item img {
    width: 60px;
    height: 60px;
    margin-bottom: 0.8rem;
    transition: transform 0.2s ease;
}

.skill-item:hover img {
    transform: scale(1.15);
}

.skill-item span {
    font-size: 1rem;
    color: var(--clr-text-secondary);
    font-weight: var(--fw-medium);
    white-space: nowrap;
}

/* Project Card Specifics */
.project-card {
    text-align: left;
    display: flex;
    flex-direction: column;
}

.project-thumbnail {
    width: 100%;
    height: 280px; /* Taller image for better preview */
    object-fit: cover;
    border-bottom: 1px solid var(--clr-border);
}

.project-info {
    padding: 2rem; /* Consistent padding inside info block */
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-card h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem; /* Closer to date */
    color: var(--clr-text-primary);
}

.project-date {
    font-size: 0.95rem;
    color: var(--clr-text-tertiary);
    margin-bottom: 1rem;
}

.project-description {
    font-size: 1.05rem;
    color: var(--clr-text-secondary); /* Main body text color for description */
    margin-bottom: 1.5rem; /* Space before links */
    flex-grow: 1; /* Pushes links to bottom */
    line-height: 1.6;
}

.project-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: auto; /* Ensures links are at the bottom */
}

/* Achievement Card Specifics */
.achievement-card {
    padding: 2.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.achievement-card img {
    width: 60px; /* Icon size */
    height: 60px;
    margin-bottom: 1.5rem;
    /* Filter to make icons accent colored */
    filter: invert(39%) sepia(61%) saturate(2000%) hue-rotate(195deg) brightness(97%) contrast(101%);
}

.achievement-card h4 {
    font-size: 1.4rem;
    color: var(--clr-text-primary);
    margin-bottom: 0.8rem;
    font-weight: var(--fw-semibold);
}

.achievement-card p {
    font-size: 1rem;
    color: var(--clr-text-secondary);
    line-height: 1.5;
    margin-bottom: 0; /* No margin at bottom of last paragraph in card */
}

/* ------------------------------------------- */
/* 6. Form Elements                            */
/* ------------------------------------------- */
.contact-form {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 0 auto 4rem auto;
    gap: 1.8rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1.4rem;
    border: 1px solid var(--clr-border);
    border-radius: 10px;
    font-family: var(--ff-primary);
    font-size: 1.1rem;
    color: var(--clr-text-primary);
    background-color: var(--clr-background-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 5px rgba(0, 123, 255, 0.25);
}

.contact-form textarea {
    resize: vertical;
    min-height: 180px;
}

.contact-form .button-primary {
    align-self: flex-start;
    width: auto;
    min-width: 220px;
}

/* ------------------------------------------- */
/* 7. Social Links                             */
/* ------------------------------------------- */
.social-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 3.5rem;
}

.social-links a img {
    width: 45px;
    height: 45px;
    transition: transform 0.2s ease;
}

.social-links a:hover img {
    transform: translateY(-5px);
}