/* Notion-like Styles */
:root {
    --font-sans: "Inter", sans-serif;
    --text-color: rgb(25, 25, 24);
    --bg-color: #fafafa;
    --border-color: rgba(55, 53, 47, 0.12);
    --space-8: 8px;
    --space-12: 12px;
    --space-16: 16px;
    --space-24: 24px;
    --space-32: 32px;

    /* App Specific */
    --text-color-light: rgba(25, 25, 24, 0.9);
    --primary-button: #2383E2;
    --hover-surface: rgba(55, 53, 47, 0.08);
    --selection-bg: rgba(35, 131, 226, 0.28);
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--selection-bg);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-32) var(--space-24);
}

/* ========== APP HEADER ========== */
.app-header {
    text-align: center;
    margin-bottom: var(--space-24);
    padding: var(--space-16) var(--space-24);
    margin: calc(-1 * var(--space-32)) calc(-1 * var(--space-24)) var(--space-24);
}

.app-header__title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--text-color);
    margin: 0;
    padding-bottom: var(--space-16);
}

.app-header__title::after {
    content: "";
    display: block;
    width: 40%;
    height: 1px;
    background: var(--border-color);
    margin: var(--space-16) auto 0;
}

.search-section {
    margin-bottom: 48px;
}

.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

input[type="text"] {
    flex: 1;
    font-size: 18px;
    padding: 12px 16px;
    border: 0.5px solid rgba(55, 53, 47, 0.16);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s;
    caret-color: var(--caret-color);
    font-family: "Inter", sans-serif;
}

input[type="text"]:focus {
    border-color: var(--primary-button);
}

button#find-button {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 50px;
    background: #000000;
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
    font-family: "Inter", sans-serif;
}

button#find-button:hover {
    background: #1a1a1a;
}

button#find-button:active {
    background: #333333;
}

button#find-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.input-hint {
    font-size: 14px;
    color: rgba(25, 25, 24, 0.6);
}

/* Loading State */
.hidden {
    display: none !important;
}

#loading {
    text-align: center;
    padding: 40px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(35, 131, 226, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-button);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Results */
.section-title {
    font-size: 28px;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin-bottom: 24px;
}

.tool-card {
    padding: 24px;
    border: 0.5px solid rgba(55, 53, 47, 0.16);
    border-radius: 12px;
    margin-bottom: 24px;
    transition: background 0.2s;
}

.tool-card.primary {
    background: rgba(35, 131, 226, 0.03);
    border-color: rgba(35, 131, 226, 0.3);
    border-width: 2px;
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.tool-name {
    font-size: 24px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-color);
}

.tool-name:hover {
    color: var(--primary-button);
}

.use-case-badge {
    font-size: 14px;
    font-weight: 600;
    padding: 4px 10px;
    background: rgba(35, 131, 226, 0.1);
    color: var(--primary-button);
    border-radius: 20px;
}

.tool-explanation {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-color-light);
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    font-size: 12px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--hover-surface);
    color: rgba(25, 25, 24, 0.7);
}

.tag.capability {
    background: rgba(35, 131, 226, 0.1);
    color: #1B6DC1;
}

.tag.cost {
    background: rgba(71, 192, 103, 0.1);
    color: #2B7A3D;
}

.tag.platform {
    background: rgba(146, 84, 222, 0.1);
    color: #6E39B0;
}

.alternatives-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.error {
    color: #EB5757;
    background: rgba(235, 87, 87, 0.1);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
}

footer {
    margin-top: 80px;
    text-align: center;
    font-size: 14px;
    color: rgba(25, 25, 24, 0.5);
    border-top: 0.5px solid rgba(55, 53, 47, 0.16);
    padding-top: 24px;
}

@media (max-width: 768px) {
    .container {
        padding: var(--space-24) var(--space-16);
    }

    .app-header {
        padding: var(--space-12) var(--space-16);
        margin: calc(-1 * var(--space-24)) calc(-1 * var(--space-16)) var(--space-20);
    }

    .app-header__title {
        font-size: 28px;
    }
}

@media (min-width: 768px) {
    .alternatives-grid {
        grid-template-columns: 1fr 1fr;
    }
}