:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #dae44d;
    --light-bg: #f8f9fa;
    --text-color: #333333;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --border-color: rgba(0,0,0,0.1);
    --navbar-bg: #ffffff;
    --footer-bg: #ffffff;
}

[data-theme="dark"] {
    --primary-color: #34495e;
    --secondary-color: #5dade2;
    --accent-color: #dae44d;
    --light-bg: #2c3e50;
    --text-color: #ecf0f1;
    --bg-color: #1a252f;
    --card-bg: #34495e;
    --border-color: rgba(255,255,255,0.1);
    --navbar-bg: #2c3e50;
    --footer-bg: #2c3e50;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar {
    background-color: var(--navbar-bg) !important;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: unset;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--text-color);
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--secondary-color);
}

.navbar-light .navbar-brand {
    color: var(--secondary-color);
}

/* Theme Toggle Switch */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 50px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    background-color: #fff;
    bottom: 2px;
    content: "";
    height: 20px;
    left: 2px;
    position: absolute;
    transition: .4s;
    width: 20px;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--secondary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.theme-switch-wrapper em {
    margin-left: 10px;
    font-size: 0.9rem;
    color: var(--text-color);
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 100px 0;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.btn-primary-custom {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary-custom:hover {
    background-color: #a6ad41;
    border-color: #a6ad41;
    transform: translateY(-2px);
}

.section-padding {
    padding: 80px 0;
}

.section-title {
    color: var(--text-color);
    margin-bottom: 3rem;
    font-weight: bold;
}

.how-it-works-card {
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px var(--border-color);
    height: 100%;
    transition: transform 0.2s ease, background-color 0.3s ease;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px 0 rgba(22, 22, 26, 0.18);
}

.how-it-works-card:hover {
    transform: scale(1.1);
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--secondary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
}

.project-card {
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px var(--border-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-5px);
}

.card-body {
    background: var(--card-bg);
    color: var(--text-color);
}

p {
    color: var(--text-color);
}

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: contain;
}

.project-details {
    background: var(--light-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.contact-section {
    background: var(--primary-color);
    color: white;
}

.section-light-bg {
    background: var(--light-bg) !important;
}

.footer {
    background: var(--footer-bg);
    color: var(--text-color);
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section p {
        font-size: 1.1rem;
    }
}

/* Project Carousel Styling */
#projectsCarousel {
    position: relative;
    padding: 0 60px;
}

#projectsCarousel .carousel-control-prev,
#projectsCarousel .carousel-control-next {
    width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.8;
    transition: opacity 0.3s ease, background-color 0.3s ease;
}

#projectsCarousel .carousel-control-prev {
    left: 0;
}

#projectsCarousel .carousel-control-next {
    right: 0;
}

#projectsCarousel .carousel-control-prev:hover,
#projectsCarousel .carousel-control-next:hover {
    opacity: 1;
    background-color: var(--primary-color);
}

#projectsCarousel .carousel-control-prev-icon,
#projectsCarousel .carousel-control-next-icon {
    width: 20px;
    height: 20px;
}

#projectsCarousel .carousel-indicators {
    bottom: -50px;
}

#projectsCarousel .carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--border-color);
    border: none;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

#projectsCarousel .carousel-indicators button.active {
    background-color: var(--secondary-color);
    transform: scale(1.2);
}

#projectsCarousel .carousel-indicators button:hover {
    background-color: var(--primary-color);
}

/* Responsive adjustments for carousel */
@media (max-width: 768px) {
    #projectsCarousel {
        padding: 0 40px;
    }
    
    #projectsCarousel .carousel-control-prev,
    #projectsCarousel .carousel-control-next {
        width: 40px;
        height: 40px;
    }
    
    #projectsCarousel .carousel-control-prev-icon,
    #projectsCarousel .carousel-control-next-icon {
        width: 16px;
        height: 16px;
    }
}

.carousel-inner {
    position: unset;
    overflow: visible;
}

/* Form Validation Styles */
.form-control.is-valid {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.form-control.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.input-group .form-control.is-valid + .input-group-text {
    border-color: #28a745;
    background-color: rgba(40, 167, 69, 0.1);
    color: #28a745;
}

.input-group .form-control.is-invalid + .input-group-text {
    border-color: #dc3545;
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

.valid-feedback {
    display: block;
    font-size: 0.875em;
    color: #28a745;
    margin-top: 0.25rem;
}

.invalid-feedback {
    display: block;
    font-size: 0.875em;
    color: #dc3545;
    margin-top: 0.25rem;
}

.feedback-icon {
    position: absolute;
    right: 45px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    pointer-events: none;
}

/* Modal Styling */

.modal-content {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 20px;
    border: none;
    color: white;
}

.modal-title {
    font-weight: 600;
}

.modal-body {
    padding: 30px;
}

.btn-close {
    filter: brightness(0) invert(1);
}

.form-control {
    padding: 12px 15px;
    border-radius: 10px;
    border: 2px solid #eee;
    transition: all 0.3s ease;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.form-control::placeholder {
    color: #ccc;
    opacity: 1;
}


.form-control:focus {
    border-color: #0062cc;
    box-shadow: none;
}

.form-select {
    padding: 12px 15px;
    border-radius: 10px;
    border: 2px solid #eee;
    transition: all 0.3s ease;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.form-select::placeholder {
    color: #ccc;
    opacity: 1;
}


.form-select:focus {
    border-color: #0062cc;
    box-shadow: none;
}

.input-group-text {
    border: none;
    background: transparent;
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 4;
    color: #666;
}

.input-group {
    position: relative;
}

.btn-login {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 10px;
    font-weight: 500;
    width: 100%;
    transition: all 0.3s ease;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 98, 204, 0.3);
}

.social-login {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn-social {
    flex: 1;
    padding: 12px;
    border-radius: 10px;
    border: 2px solid #eee;
    background: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.btn-social:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-social i {
    margin-right: 10px;
}

.divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 45%;
    height: 1px;
    background: #eee;
}

.divider::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    width: 45%;
    height: 1px;
    background: #eee;
}

.divider span {
    background: white;
    padding: 0 10px;
    color: #666;
    font-size: 0.9rem;
}

.form-check {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 15px 0;
}

.password-toggle {
    cursor: pointer;
}

.register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
}


/* Choices.js theme-aware overrides to match project light/dark variables */
.choices__inner {
    background-color: var(--bg-color);
    border: 2px solid #eee;
    color: var(--text-color);
    border-radius: 10px;
    padding: 8px 12px;
    padding-right: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: visible;
    position: relative;
}

.choices__inner.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.choices__list--multiple {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    padding: 2px 0;
    margin: 0;
    min-height: 36px;
}

.choices__item {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid rgba(0,0,0,0.06);
    padding: 6px 12px;
    border-radius: 20px;
    box-shadow: none;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    height: 36px;
}

.choices__item--selectable {
    cursor: default;
}

.choices__button {
    color: var(--text-color);
    background: transparent;
    border: none;
    margin-left: 8px;
    padding: 4px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background-color 0.12s ease, color 0.12s ease;
}

.choices__button:hover {
    color: var(--choices-highlight-color);
    background: rgba(0,0,0,0.06);
}

.choices__input {
    color: var(--text-color);
    background: transparent;
    font-size: 1rem;
    border: none;
    min-width: 140px;
}

.choices__list--dropdown {
    /* Position dropdown absolutely so it overlays page content cleanly */
    position: absolute;
    left: 0;
    top: calc(100% + 8px);
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(2,6,23,0.18);
    color: var(--text-color);
    border-radius: 8px;
    overflow: auto;
    max-height: 320px;
    z-index: 2200;
}

.choices__list--dropdown .choices__item--selectable.is-highlighted,
.choices__list[aria-expanded] .choices__item--selectable.is-highlighted {
    background: var(--choices-highlight-bg);
    color: var(--choices-highlight-color);
}

.choices__list--dropdown, .choices__list[aria-expanded]{
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);

}

.choices__list--dropdown .choices__item {
    display: flex;
    padding: 10px 14px;
    margin: 0;
    border-radius: 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    background: transparent;
}

.choices__list--dropdown .choices__item:last-child {
    border-bottom: none;
}

.choices__list--dropdown .choices__item--selectable {
    cursor: pointer;
}

.choices__list--dropdown .choices__item--selectable:hover,
.choices__list--dropdown .choices__item--highlighted {
    background: rgba(0,0,0,0.04);
    color: var(--text-color);
}

[data-theme="dark"] .choices__list--dropdown .choices__item--selectable:hover,
[data-theme="dark"] .choices__list--dropdown .choices__item--highlighted {
    background: rgba(255,255,255,0.03);
}

/* Ensure the Choices container is positioned to allow absolute dropdown */
.choices {
    position: relative;
    width: 100%;
}

.choices__item--highlighted {
    background: linear-gradient(90deg, rgba(0,0,0,0.06), rgba(0,0,0,0.03));
}

[data-theme="dark"] .choices__item--highlighted {
    background: linear-gradient(90deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
}

.choices__placeholder {
    color: rgba(128,128,128,0.6);
}

.choices__inner:focus-within {
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.12);
    border-color: var(--secondary-color);
    background-color: var(--bs-body-bg);
}

/* Ensure select native fallback still readable */
.choices-select {
    color: var(--text-color);
    background: var(--bg-color);
}

/* Theme-aware variables and refined styling for Choices */
:root {
    --choices-bg: var(--bg-color);
    --choices-border: var(--border-color);
    --choices-tag-bg: rgba(0,0,0,0.06);
    --choices-tag-color: var(--text-color);
    --choices-highlight-bg: var(--secondary-color);
    --choices-highlight-color: #ffffff;
}

[data-theme="dark"] {
    --choices-tag-bg: rgba(255,255,255,0.04);
}

/* Tag / selected item styling (consistent with earlier definitions) */
.choices__item {
    background: var(--choices-tag-bg);
    color: var(--choices-tag-color);
    border: 1px solid rgba(0,0,0,0.06);
    padding: 6px 12px;
    border-radius: 20px;
    box-shadow: none;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    height: 36px;
}

/* Make selected pills prominent and theme-consistent */
.choices__list--multiple .choices__item {
    display: flex;
    background: var(--secondary-color);
    color: #ffffff;
    border: none;
    font-size: var(--bs-body-font-size);
    gap: 6px;
}

.choices[data-type*="select-multiple"] .choices__button, .choices[data-type*="text"] .choices__button {
    background-repeat: no-repeat;
    background-position: center;
    background-size: var(--bs-body-font-size);
    margin: unset;
    padding-left: 20px;
}

.choices__list--multiple .choices__button {
    color: rgba(255,255,255,0.95);
    background: rgba(255,255,255,0.08);
    margin-left: 8px;
    padding: 4px;
    border-radius: 50%;
}

.choices__item--selectable { cursor: default; }

.choices__button {
    color: var(--choices-tag-color);
    background: transparent;
    border: none;
    margin-left: 8px;
    padding: 4px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background-color 0.12s ease, color 0.12s ease;
}

.choices__button:hover {
    color: var(--choices-highlight-color);
    background: rgba(0,0,0,0.06);
}

.choices__list--dropdown .choices__item--highlighted,
.choices__item--highlighted {
    background: var(--choices-highlight-bg);
    color: var(--choices-highlight-color);
}

/* Dropdown z-index and radius */
.choices__list--dropdown { z-index: 1055; border-radius: 10px; }

/* Wrapper: remove native arrow (we add it to Choices) */
.select-wrapper { position: relative; }
.select-wrapper::after { display: none; }

/* Ensure native select has padding for arrow if used */
.select-wrapper .form-select { padding-right: 2.75rem; }

/* Options in native select should match card bg for contrast */
.select-wrapper .form-select option { background: var(--card-bg); color: var(--text-color); }

/* When Choices replaces the select, keep original element off-screen but accessible to AT */
select.choices-select[aria-hidden="true"] {
    position: absolute !important;
    left: -9999px !important;
    top: auto !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
}

/* Add arrow to Choices inner for consistent visual */
.choices__inner::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--text-color);
    pointer-events: none;
    opacity: 0.7;
}

/* Native select / fallback styling to match theme */
#projectDepartment,
.form-select {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 12px;
    appearance: none;
    -webkit-appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--text-color) 50%), linear-gradient(135deg, var(--text-color) 50%, transparent 50%), linear-gradient(to right, var(--border-color), var(--border-color));
    background-position: calc(100% - 18px) calc(1em + 2px), calc(100% - 13px) calc(1em + 2px), calc(100% - 2.5em) 0.75em;
    background-size: 6px 6px, 6px 6px, 1px 1.25em;
    background-repeat: no-repeat;
}

#projectDepartment option,
.form-select option {
    background: var(--card-bg);
    color: var(--text-color);
}

#projectDepartment:focus,
.form-select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.12);
}

/* When Choices.js replaces the select, keep the original element visually hidden but accessible */
select.choices-select[aria-hidden="true"] {
    position: absolute !important;
    left: -9999px !important;
    top: auto !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
}