@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

body {
    font-family: 'Inter', sans-serif;
    background-color: #F8F9FC;
    color: #1F2937;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 3rem;
}

/* header */
.main-header {
    background: linear-gradient(135deg, #211C84 0%, #4D55CC 100%);
    box-shadow: 0 4px 20px rgba(33, 28, 132, 0.15);
    position:sticky;
    top: 0;
    z-index: 50;
}

.header-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 0;
    gap: 3rem;
}

.app-title {
    font-size: 2rem;
    font-weight: 800;
    color: #FFFFFF;
    margin: 0;
    letter-spacing: -0.5px;
}

/* search input*/
.search-form {
    width: 100%;
    max-width: 600px;
}

.search-container {
    position: relative;
    display: flex;
}

.search-input {
    width: 100%;
    padding: 1rem 1.25rem;
    padding-right: 3.5rem;
    border: 2px solid transparent;
    border-radius: 12px;
    font-size: 0.95rem;
    background-color: rgba(255, 255, 255, 0.95);
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.search-input::placeholder {
    color: #6B7280;
}

.search-input:focus {
    border-color: #B5A8D5;
    outline: none;
    box-shadow: 0 6px 20px rgba(77, 85, 204, 0.2);
    background-color: #FFFFFF;
}

/* manual search button  */
.search-button {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, #4D55CC 0%, #7A73D1 100%);
    border: none;
    cursor: pointer;
    padding: 0.6rem;
    border-radius: 8px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-button:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 4px 12px rgba(77, 85, 204, 0.3);
}

.search-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: #FFFFFF;
}

/* main navigation bar below header */
.nav-bar {
    background: linear-gradient(135deg, #4D55CC 0%, #7A73D1 100%);
    box-shadow: 0 4px 15px rgba(77, 85, 204, 0.2);
    position: sticky;
    top: 0;
    z-index: 45;
    padding: 0.75rem 2rem;
}

.nav-content {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem 0;
    justify-content: center;
    max-width: 1280px;
    margin: 0 auto;
}

.nav-dropdown {
    position: relative;
}

/* glass effect on nav buttons */
.nav-button {
    color: #FFFFFF;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.nav-icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* dropdown to appear on hover */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #FFFFFF;
    min-width: 220px;
    box-shadow: 0 10px 40px rgba(33, 28, 132, 0.15);
    z-index: 100;
    border-radius: 12px;
    top: calc(100% + 0.5rem);
    left: 0;
    padding: 0.5rem;
    border: 1px solid rgba(181, 168, 213, 0.2);
}

.nav-dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-item {
    padding: 0.875rem 1rem;
    text-decoration: none;
    display: block;
    color: #1F2937;
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 0.9rem;
    font-weight: 500;
}

.dropdown-item:hover {
    background: linear-gradient(135deg, #B5A8D5 0%, #7A73D1 100%);
    color: #FFFFFF;
    transform: translateX(4px);
}

/* main content container */
.main-content-area {
    padding: 3rem 0;
    min-height: 60vh;
    position: relative;
    z-index: 1;
}

.search-label {
    font-size: 1.75rem;
    font-weight: 700;
    color: #211C84;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid #B5A8D5;
    display: inline-block;
}

/* intro section before results load */
#intro-content {
    background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FF 100%);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(33, 28, 132, 0.08);
    margin-bottom: 2.5rem;
    border: 1px solid rgba(181, 168, 213, 0.2);
}

.intro-content {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #4B5563;
}

/* card grid with auto-fill, max 3 columns on large screens */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 100%;
}

/* individual opportunity card */
.opportunity-card {
    background: #FFFFFF;
    padding: 1.75rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(33, 28, 132, 0.08);
    border: 1px solid rgba(181, 168, 213, 0.15);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

/* gradient accent bar at top */
.opportunity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #4D55CC 0%, #7A73D1 100%);
}

.opportunity-card:hover {
    box-shadow: 0 12px 40px rgba(33, 28, 132, 0.15);
    transform: translateY(-8px);
    border-color: #B5A8D5;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.card-source {
    font-size: 0.85rem;
    color: #4D55CC;
    font-weight: 600;
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: #E0E7FF;
    border-radius: 6px;
}

.card-timestamp {
    font-size: 0.8rem;
    color: #6B7280;
    font-weight: 500;
}

.card-description {
    color: #4B5563;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* cta button with gradient */
.cta-button {
    display: block;
    width: 100%;
    text-align: center;
    color: #FFFFFF;
    background: linear-gradient(135deg, #4D55CC 0%, #7A73D1 100%);
    padding: 0.875rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(77, 85, 204, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(77, 85, 204, 0.3);
    background: linear-gradient(135deg, #211C84 0%, #4D55CC 100%);
}

/* pagination styles - only appears after search */
.pagination-container {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    margin-top: 2rem;
    padding: 1.5rem;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(33, 28, 132, 0.08);
}

.pagination-info {
    font-size: 0.9rem;
    color: #4B5563;
    font-weight: 600;
}

.pagination-info-simple {
    grid-column: 1 / -1;
    text-align: center;
    padding: 1.5rem;
    color: #4B5563;
    font-size: 0.95rem;
    font-weight: 600;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(33, 28, 132, 0.08);
    margin-top: 2rem;
}

.pagination-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.pagination-btn {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #4D55CC 0%, #7A73D1 100%);
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.pagination-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(77, 85, 204, 0.3);
}

.pagination-btn:disabled {
    background: #E5E7EB;
    color: #9CA3AF;
    cursor: not-allowed;
}

.pagination-pages {
    font-weight: 600;
    color: #211C84;
    padding: 0 1rem;
}

/* a cute loading indicator and its paragraph */
.dev-note {
    text-align: center;
    padding: 3rem 2rem;
}

.spinner {
    margin: 2rem auto;
    width: 70px;
    text-align: center;
}

/* three bouncing dots */
.spinner > div {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #4D55CC 0%, #7A73D1 100%);
    border-radius: 100%;
    display: inline-block;
    animation: bounce 1.4s infinite ease-in-out both;
    margin: 0 4px;
}

.spinner .bounce1 {
    animation-delay: -0.32s;
}

.spinner .bounce2 {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1.0);
    }
}

.loading-text {
    color: #4D55CC;
    font-weight: 600;
    text-align: center;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.text-center-message {
    text-align: center;
    padding: 3rem 2rem;
    color: #4B5563;
    font-size: 1.1rem;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(33, 28, 132, 0.08);
}

.hidden {
    display: none !important;
}

/* tablet and up */
@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        padding: 3rem 0;
        gap: 4rem;
    }

    .app-title {
        margin-bottom: 0;
        font-size: 2.25rem;
    }

    .search-form {
        max-width: 500px;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .container {
        padding: 0 2.5rem;
    }
}

/* large desktop */
@media (min-width: 1200px) {
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2.5rem;
    }

    .container {
        max-width: 1400px;
        padding: 0 3rem;
    }

    .main-content-area {
        padding: 4rem 0;
    }
}

/* extra large screens */
@media (min-width: 1600px) {
    .container {
        max-width: 1500px;
        padding: 0 4rem;
    }

    .results-grid {
        gap: 3rem;
    }
}

/* mobile adjustments */
@media (max-width: 767px) {
    .results-grid {
        grid-template-columns: 1fr;
    }

    .app-title {
        font-size: 1.75rem;
    }

    .search-label {
        font-size: 1.5rem;
    }

    .nav-content {
        gap: 0.75rem;
    }

    .nav-button {
        padding: 0.65rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* small mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .opportunity-card {
        padding: 1.5rem;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .pagination-btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.85rem;
    }

    .pagination-pages {
        font-size: 0.9rem;
    }
}