/* 
   SISTEMA DE DESIGN - GITHUB OFFICIAL COLORS (PRIMER)
   Default: Dark Mode | Class .light-theme: Light Mode
*/
:root {
    /* DARK THEME (DEFAULT) */
    --bg-color: #0d1117;
    --container-bg: #161b22;
    --card-bg: #0d1117;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    --border: #30363d;
    --accent: #58a6ff;
    --primary: #238636;
    --primary-hover: #2ea043;
    --danger: #da3633;
    --danger-hover: #f85149;
    --success-bg: rgba(35, 134, 54, 0.1);
}

body.light-theme {
    /* LIGHT THEME OVERRIDES */
    --bg-color: #f6f8fa;
    --container-bg: #ffffff;
    --card-bg: #ffffff;
    --text-main: #1f2328;
    --text-muted: #59636e;
    --border: #d0d7de;
    --accent: #0969da;
    --primary: #1f883d;
    --primary-hover: #1a7f37;
    --danger: #d1242f;
    --danger-hover: #b62327;
    --success-bg: rgba(31, 136, 61, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.1s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    line-height: 1.5;
}

.container {
    width: 90%;
    max-width: 450px;
    background-color: var(--container-bg);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* HEADER & THEME TOGGLE */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

#theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

#theme-toggle:hover {
    border-color: var(--text-muted);
    color: var(--text-main);
    background-color: var(--border);
}

header p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 32px;
    text-align: center;
}

/* CONTROLS */
.controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

select {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-main);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
}

select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.3);
}

button:not(#theme-toggle) {
    width: 100%;
    padding: 10px 20px;
    background-color: var(--primary);
    color: #ffffff;
    border: 1px solid rgba(240, 246, 252, 0.1);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

button:not(#theme-toggle):hover {
    background-color: var(--primary-hover);
}

/* STATES */
.state {
    padding: 24px;
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hidden {
    display: none !important;
}

/* REPO CARD */
#state-success {
    border-color: var(--border);
    background: var(--card-bg);
    align-items: flex-start;
    text-align: left;
}

#repo-link {
    text-decoration: none;
    color: var(--accent);
}

#repo-link:hover h2 {
    text-decoration: underline;
}

#repo-name {
    font-size: 18px;
    margin-bottom: 8px;
}

#repo-description {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.repo-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: var(--text-main);
    margin-bottom: 24px;
}

.repo-stats span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.repo-stats svg {
    color: var(--text-muted);
}

.repo-language-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* SPECIAL BUTTONS */
#refresh-btn {
    background-color: var(--container-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    margin-top: 10px;
}

#refresh-btn:hover {
    background-color: var(--border);
}

#retry-btn {
    background-color: var(--danger);
}

#retry-btn:hover {
    background-color: var(--danger-hover);
}

/* SPINNER & ERROR */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}

.error-msg {
    color: var(--danger);
    font-size: 14px;
    margin-bottom: 16px;
}

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