/* ===== IMPORTS & VARIABLES ===== */
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@400;500;700&display=swap');

:root {
    --bg-color: #1a212e;
    --sidebar-bg: #1f2937;
    --card-bg: #2c3a4f;
    --border-color: #4a5568;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --primary-accent: #3b82f6;
}

/* NEW: Light Theme Variables */
body.light-theme {
    --bg-color: #f1f5f9;
    --sidebar-bg: #ffffff;
    --card-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
}

/* ===== GENERAL RESET & SETUP ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: var(--font-family); 
    background-color: var(--bg-color); 
    color: var(--text-primary); 
    font-size: 16px;
    transition: background-color 0.3s, color 0.3s;
}

/* ===== APP LAYOUT (Single Column) ===== */
.app-container { display: flex; flex-direction: column; min-height: 100vh; }
.app-header { padding: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.main-content { display: flex; flex-direction: column; gap: 1.5rem; padding: 0 1.5rem 1.5rem; width: 100%; max-width: 1200px; margin: 0 auto; }

/* ===== HEADER ===== */
.logo { display: flex; align-items: center; gap: 1rem; }
.logo img { width: 40px; height: 40px; }
.btn-icon { background: none; border: none; color: var(--text-secondary); font-size: 1.2rem; cursor: pointer; padding: 0.5rem; border-radius: 50%; }
.btn-icon:hover { background-color: var(--card-bg); color: var(--text-primary); }

/* ===== CARDS & ACCORDIONS ===== */
.card { background-color: var(--sidebar-bg); border-radius: 12px; padding: 1.5rem; border: 1px solid var(--border-color); transition: background-color 0.3s, border-color 0.3s; }
.file-drop-zone { border: 2px dashed var(--border-color); border-radius: 8px; padding: 2rem; text-align: center; cursor: pointer; transition: background-color 0.2s; }
.file-drop-zone:hover { background-color: var(--card-bg); }
.file-drop-zone i { color: var(--text-secondary); margin-bottom: 1rem; }
.file-info-pill { display: flex; align-items: center; justify-content: space-between; background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 0.75rem; margin-top: 1rem; }
.file-info-pill span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
.file-info-pill .actions i { margin-left: 0.5rem; cursor: pointer; color: var(--text-secondary); }
.file-info-pill .actions i:hover { color: var(--text-primary); }

.accordion summary { display: flex; justify-content: space-between; align-items: center; cursor: pointer; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary i { transition: transform 0.2s; }
.accordion[open] summary i { transform: rotate(180deg); }
.accordion-content { padding-top: 1.5rem; }

/* ===== EDITOR CARD ===== */
.editor-card { display: flex; flex-direction: column; }
.editor-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 1rem; }
.subtitle-stats { display: flex; align-items: center; gap: 1rem; }
.language-selector span { background-color: var(--card-bg); padding: 0.5rem 1rem; border-radius: 8px; font-size: 0.9em; }
.language-selector span.active { background-color: #22c55e; color: white; }

.editor-grid-header { display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem; padding: 0 1rem; margin-bottom: 0.5rem; color: var(--text-secondary); }
.editor-grid-header h4:first-child { text-align: right; }
.editor-grid-header h4:last-child { text-align: right; }

.editor-grid { display: flex; flex-direction: column; gap: 0.5rem; max-height: 60vh; overflow-y: auto; padding: 0.5rem; }
.placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; min-height: 200px; color: var(--text-secondary); text-align: center; }
.placeholder i { margin-bottom: 1rem; color: #4a5568; }

/* SUBTITLE ROW (New Structure) */
.subtitle-row { display: flex; flex-direction: column; background-color: var(--card-bg); border-radius: 8px; padding: 1rem; transition: background-color 0.3s; }
.subtitle-row.translating { box-shadow: 0 0 0 2px var(--primary-accent); }
.timecode-header { color: var(--text-secondary); font-size: 0.8em; font-family: 'Courier New', monospace; direction: ltr; margin-bottom: 0.75rem; text-align: center; }
.text-cells { display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem; align-items: center; }
.block-tag-cell { display: flex; align-items: center; justify-content: center; }
.block-tag { background-color: var(--primary-accent); color: white; padding: 0.2rem 0.6rem; border-radius: 4px; font-family: var(--font-family); font-size: 0.9em; }
.editor-textarea { width: 100%; background-color: var(--sidebar-bg); border: 1px solid var(--border-color); border-radius: 6px; padding: 0.75rem; color: var(--text-primary); font-family: var(--font-family); resize: vertical; min-height: 80px; transition: background-color 0.3s, border-color 0.3s, color 0.3s; }
.editor-textarea:focus { outline: 2px solid var(--primary-accent); }

/* ===== FORMS & BUTTONS ===== */
label { display: block; margin-bottom: 0.5rem; font-size: 0.9em; color: var(--text-secondary); }
input[type="text"], input[type="number"], textarea, select {
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: var(--font-family);
    margin-bottom: 1rem;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}
textarea { resize: vertical; }
textarea[readonly] { background-color: var(--bg-color); color: var(--text-secondary); cursor: default; opacity: 0.7; font-size: 0.8em; }

.advanced-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}
.advanced-controls small {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-top: -0.75rem;
    display: block;
}

progress { width: 100%; height: 8px; border-radius: 4px; overflow: hidden; border: none; background-color: var(--card-bg); }
progress::-webkit-progress-bar { background-color: var(--card-bg); }
progress::-webkit-progress-value { background-color: var(--primary-accent); }
.action-buttons { display: grid; grid-template-columns: 1fr auto; gap: 1rem; margin: 1rem 0; }
.btn { width: 100%; padding: 0.75rem; border-radius: 8px; border: none; font-family: var(--font-family); font-weight: 700; cursor: pointer; transition: filter 0.2s; display: flex; align-items: center; justify-content: center; gap: 0.5rem; }
.btn:disabled { cursor: not-allowed; filter: grayscale(60%) opacity(50%); }
.btn:hover:not(:disabled) { filter: brightness(1.1); }
.btn-primary { background-color: var(--primary-accent); color: white; }
.btn-secondary { background-color: var(--card-bg); color: var(--text-primary); }
.btn-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-primary); margin-top: 1rem; }
.match-count-text { display: flex; align-items: center; justify-content: center; color: var(--text-secondary); font-size: 0.9em; }