* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; }
body { background-color: #f4f6f9; color: #333; display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* 1. TOP CREDENTIALS BAR */
.user-bar { background: #1a252f; color: #fff; padding: 4px 20px; font-size: 11px; display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.user-bar span { color: #f1c40f; font-weight: bold; font-family: monospace; letter-spacing: 1px;}
.login-btn-sm { background: #3498db; color: white; border: none; padding: 2px 8px; border-radius: 3px; cursor: pointer; font-size: 10px; }

/* 2. FIXED HORIZONTAL TOOLBARS */
.toolbar-wrapper { flex-shrink: 0; display: flex; flex-direction: column; z-index: 10; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }

.toolbar { background-color: #2c3e50; padding: 8px 15px; color: white; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.toolbar h2 { margin-right: 10px; font-size: 16px; color: #f1c40f; font-weight: 700; }

.format-bar { background-color: #ecf0f1; padding: 8px 15px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; border-bottom: 1px solid #bdc3c7; }

.toolbar-group { display: flex; align-items: center; gap: 4px; background: rgba(0,0,0,0.1); padding: 4px 8px; border-radius: 4px; }
.format-bar .toolbar-group { background: #fff; border: 1px solid #dcdde1; }

.toolbar-group label { font-size: 11px; font-weight: 600; color: inherit; margin-right: 2px;}
.toolbar .toolbar-group label { color: #ecf0f1; }
.format-bar .toolbar-group label { color: #2c3e50; }

.toolbar-group input[type="number"], .toolbar-group input[type="text"] { width: 50px; padding: 3px; border-radius: 3px; border: 1px solid #ccc; text-align: center; font-size: 11px; font-weight:bold;}
.toolbar-group input[type="color"] { width: 24px; height: 24px; padding: 0; border: none; cursor: pointer; border-radius: 3px; background:transparent;}

.btn { padding: 5px 10px; border: none; border-radius: 3px; font-weight: 600; cursor: pointer; transition: 0.2s; font-size: 11px; display: flex; align-items: center; gap: 4px;}
.btn-primary { background-color: #3498db; color: white; } .btn-primary:hover { background-color: #2980b9; }
.btn-success { background-color: #2ecc71; color: white; } .btn-success:hover { background-color: #27ae60; }
.btn-danger { background-color: #e74c3c; color: white; } .btn-danger:hover { background-color: #c0392b; }
.btn-warning { background-color: #f1c40f; color: #333; } .btn-warning:hover { background-color: #f39c12; }
.btn-dark { background-color: #8e44ad; color: white; } .btn-dark:hover { background-color: #732d91; }

.btn-format { background: #fff; color: #2c3e50; border: 1px solid #bdc3c7; padding: 4px 8px; border-radius: 3px; cursor: pointer; font-size: 13px; font-weight: bold;} 
.btn-format:hover { background: #e0e6ed; }

.divider { width: 1px; height: 20px; background: #7f8c8d; margin: 0 2px; }
.format-bar .divider { background: #bdc3c7; }

/* 3. WORKSPACE */
.workspace-wrapper { flex-grow: 1; display: flex; flex-direction: column; overflow: hidden; background: #e0e6ed; padding: 15px;}
.workspace { flex-grow: 1; overflow: auto; background: #fff; border-radius: 4px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); padding: 20px; position: relative;}

/* 4. BUILDER TABLE CSS */
.builder-table { border-collapse: collapse; background: white; margin: 0 auto; user-select: none; font-size: 11px; min-width: 50%; }
.builder-td, .builder-th { 
    border: 1px solid #000; 
    min-width: 50px; 
    height: 35px; 
    text-align: center; 
    vertical-align: middle; 
    position: relative; 
    padding: 3px;
    transition: background-color 0.1s;
}

.vertical-text { writing-mode: vertical-rl; transform: rotate(180deg) translateZ(0); white-space: nowrap; font-size: inherit; display: inline-block; margin: 0 auto; letter-spacing: 0.5px;}

.builder-td.selected, .builder-th.selected { background-color: #dcedc8 !important; outline: 2px solid #689f38; outline-offset: -2px; }
.builder-td:focus, .builder-th:focus { outline: 2px solid #3498db; outline-offset: -2px; background-color: #fff; cursor: text; }

.instructions { background: #e8f4f8; border-left: 4px solid #3498db; padding: 8px 15px; margin: 10px 15px 0 15px; font-size: 12px; color: #2c3e50; display:flex; justify-content:space-between; align-items: center;}
#toast { position: fixed; bottom: 20px; right: 20px; background: #27ae60; color: white; padding: 10px 20px; border-radius: 5px; font-weight: bold; opacity: 0; transition: opacity 0.5s; z-index: 999; pointer-events: none;}

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 1000; justify-content: center; align-items: center; }
.modal-content { background: white; padding: 25px; border-radius: 8px; width: 350px; }
.context-menu { position: fixed; background: #fff; border: 1px solid #ccc; box-shadow: 0 4px 10px rgba(0,0,0,0.2); border-radius: 5px; padding: 5px 0; z-index: 1000; display: none; width: 160px; }
.context-menu-item { padding: 8px 15px; font-size: 13px; cursor: pointer; transition: 0.2s; color: #333; display: flex; align-items: center; gap: 10px;}
.context-menu-item:hover { background: #f1f2f6; color: #0056b3; }
.context-divider { height: 1px; background: #ddd; margin: 5px 0; }