/* LocaBooks v4 — Clean Modern SaaS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root{
    --brand-blue:#1A6FC4;
    --brand-green:#3EAD4B;
    --accent:linear-gradient(135deg,#1A6FC4,#3EAD4B);

    --sidebar-width:250px;
    --sidebar-bg:#FFFFFF;
    --sidebar-border:#E5E7EB;

    --page-bg:#F9FAFB;
    --surface:#FFFFFF;
    --surface-alt:#F3F4F6;

    --text-dark:#111827;
    --text:#374151;
    --text-light:#6B7280;
    --text-faint:#9CA3AF;

    --border:#E5E7EB;
    --border-light:#F3F4F6;

    --green:#059669;--green-bg:#ECFDF5;
    --yellow:#D97706;--yellow-bg:#FFFBEB;
    --red:#DC2626;--red-bg:#FEF2F2;
    --blue:#1A6FC4;--blue-bg:#EFF6FF;

    --shadow-xs:0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
    --shadow:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-lg:0 20px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04);

    --radius:8px;--radius-lg:12px;--radius-xl:16px;
    --transition:150ms ease;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px;-webkit-font-smoothing:antialiased}
body{font-family:'Inter',system-ui,sans-serif;color:var(--text);background:var(--page-bg);line-height:1.6}
a{color:var(--brand-blue);text-decoration:none}
a:hover{text-decoration:underline}
table{border-collapse:collapse;width:100%}
input,select,textarea,button{font-family:inherit;font-size:inherit}

/* ========== LAYOUT ========== */
.app-layout{display:flex;min-height:100vh}

/* ========== SIDEBAR — LIGHT & CLEAN ========== */
.sidebar{
    width:var(--sidebar-width);background:var(--sidebar-bg);
    border-right:1px solid var(--sidebar-border);
    position:fixed;top:0;left:0;bottom:0;
    display:flex;flex-direction:column;z-index:100;
    transition:transform var(--transition);
}

.sidebar-logo{
    padding:1.1rem 1rem 0.9rem;
    border-bottom:1px solid var(--border-light);
}
.sidebar-logo-inner{text-align:center}
.sidebar-logo-inner img{width:100%;max-width:190px;height:auto;display:block;margin:0 auto}

.sidebar-nav{flex:1;padding:0.6rem 0;overflow-y:auto}
.sidebar-section{padding:0 0.6rem;margin-bottom:2px}

.sidebar-section-title{
    font-size:0.66rem;font-weight:700;text-transform:uppercase;
    letter-spacing:0.1em;color:var(--text-faint);
    padding:0.85rem 0.7rem 0.3rem;
}

.sidebar-link{
    display:flex;align-items:center;gap:0.65rem;
    padding:0.5rem 0.7rem;border-radius:var(--radius);
    color:var(--text);text-decoration:none;
    font-size:0.88rem;font-weight:500;
    transition:all var(--transition);position:relative;
    margin-bottom:1px;
}
.sidebar-link i{width:18px;height:18px;flex-shrink:0;color:var(--text-light)}
.sidebar-link:hover{background:var(--surface-alt);color:var(--text-dark);text-decoration:none}
.sidebar-link:hover i{color:var(--brand-blue)}

.sidebar-link.active{
    background:#EFF6FF;color:var(--brand-blue);font-weight:600;
}
.sidebar-link.active i{color:var(--brand-blue)}
.sidebar-link.active::before{
    content:'';position:absolute;left:0;top:20%;bottom:20%;
    width:3px;background:var(--accent);border-radius:0 3px 3px 0;
}

.sidebar-badge{
    margin-left:auto;background:var(--red);color:white;
    font-size:0.62rem;font-weight:700;padding:2px 7px;
    border-radius:99px;min-width:18px;text-align:center;
}

.sidebar-user{
    padding:0.75rem 1rem;border-top:1px solid var(--border);
    display:flex;align-items:center;gap:0.6rem;
}
.sidebar-avatar{
    width:32px;height:32px;border-radius:50%;
    background:var(--accent);color:white;
    display:flex;align-items:center;justify-content:center;
    font-weight:700;font-size:0.78rem;flex-shrink:0;
}
.sidebar-user-info{flex:1;min-width:0}
.sidebar-user-name{color:var(--text-dark);font-weight:600;font-size:0.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-user-role{color:var(--text-faint);font-size:0.68rem;font-weight:500}

.sidebar-logout{
    padding:0.3rem;color:var(--text-faint);text-decoration:none;
    border-radius:6px;transition:all var(--transition);display:flex;
}
.sidebar-logout:hover{color:var(--text-dark);background:var(--surface-alt);text-decoration:none}

/* ========== MAIN ========== */
.main-content{margin-left:var(--sidebar-width);flex:1;min-width:0}

.page-header{
    background:rgba(255,255,255,0.8);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);padding:1.1rem 2rem;
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:50;
}
.page-title{font-size:1.35rem;font-weight:800;color:var(--text-dark);letter-spacing:-0.02em}
.page-subtitle{font-size:0.8rem;color:var(--text-faint);margin-top:1px}
.page-actions{display:flex;gap:0.6rem;align-items:center}
.page-body{padding:1.5rem 2rem 3rem}

/* ========== CARDS ========== */
.card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);
}
.card-header{
    padding:0.85rem 1.2rem;border-bottom:1px solid var(--border-light);
    display:flex;align-items:center;justify-content:space-between;
}
.card-title{font-size:0.9rem;font-weight:700;color:var(--text-dark)}
.card-body{padding:1.2rem}
.card-body.p-0{padding:0}

/* ========== SUMMARY CARDS ========== */
.summary-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:0.85rem;margin-bottom:1.5rem}

.summary-card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:1.1rem 1.25rem;
    position:relative;overflow:hidden;transition:all var(--transition);
}
.summary-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.summary-card:nth-child(1)::before{background:var(--accent)}
.summary-card:nth-child(2)::before{background:linear-gradient(90deg,var(--brand-green),#5FCC6A)}
.summary-card:nth-child(3)::before{background:linear-gradient(90deg,#D97706,#FBBF24)}
.summary-card:nth-child(4)::before{background:linear-gradient(90deg,#DC2626,#F87171)}

.summary-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}

.summary-card-icon{
    float:right;width:42px;height:42px;border-radius:var(--radius);
    display:flex;align-items:center;justify-content:center;
}
.summary-card-icon.blue{background:var(--blue-bg);color:var(--blue)}
.summary-card-icon.green{background:var(--green-bg);color:var(--green)}
.summary-card-icon.yellow{background:var(--yellow-bg);color:var(--yellow)}
.summary-card-icon.red{background:var(--red-bg);color:var(--red)}

.summary-card-label{font-size:0.68rem;font-weight:700;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:0.35rem}
.summary-card-value{font-size:1.7rem;font-weight:800;color:var(--text-dark);letter-spacing:-0.03em;line-height:1.15}
.summary-card-sub{font-size:0.75rem;color:var(--text-faint);margin-top:0.15rem}

/* ========== TABLES ========== */
.data-table{width:100%;font-size:0.84rem}
.data-table thead th{
    background:var(--surface-alt);padding:0.65rem 1rem;text-align:left;
    font-weight:600;color:var(--text-light);font-size:0.72rem;
    text-transform:uppercase;letter-spacing:0.06em;
    border-bottom:1px solid var(--border);white-space:nowrap;
}
.data-table tbody td{padding:0.7rem 1rem;border-bottom:1px solid var(--border-light);vertical-align:middle}
.data-table tbody tr{transition:background 0.1s}
.data-table tbody tr:hover{background:var(--surface-alt)}
.data-table tbody tr.clickable{cursor:pointer}
.data-table .text-right{text-align:right}
.data-table .text-center{text-align:center}
.data-table .text-muted{color:var(--text-faint)}
.data-table .text-nowrap{white-space:nowrap}
.data-table .text-money{font-variant-numeric:tabular-nums;font-weight:600}

.empty-state{text-align:center;padding:2.5rem 1.5rem;color:var(--text-faint)}
.empty-state i{margin-bottom:0.75rem;opacity:0.2}
.empty-state h3{font-size:1rem;color:var(--text);margin-bottom:0.3rem;font-weight:700}
.empty-state p{font-size:0.84rem;margin-bottom:1.25rem}

/* ========== BUTTONS ========== */
.btn{
    display:inline-flex;align-items:center;gap:0.4rem;
    padding:0.5rem 1rem;border-radius:var(--radius);
    font-weight:600;font-size:0.84rem;border:1px solid transparent;
    cursor:pointer;transition:all var(--transition);
    text-decoration:none;white-space:nowrap;line-height:1.4;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:0.5;cursor:not-allowed;transform:none}

.btn-primary{background:var(--brand-blue);color:white;box-shadow:0 1px 3px rgba(26,111,196,0.3)}
.btn-primary:hover{background:#1560AB;box-shadow:0 3px 8px rgba(26,111,196,0.3)}

.btn-secondary{background:white;color:var(--text);border-color:var(--border);box-shadow:var(--shadow-xs)}
.btn-secondary:hover{background:var(--surface-alt)}

.btn-danger{background:var(--red);color:white}
.btn-danger:hover{background:#B91C1C}

.btn-success{background:var(--brand-green);color:white;box-shadow:0 1px 3px rgba(62,173,75,0.3)}
.btn-success:hover{background:#339E40;box-shadow:0 3px 8px rgba(62,173,75,0.3)}

.btn-ghost{background:transparent;color:var(--text-light);border-color:transparent}
.btn-ghost:hover{background:var(--surface-alt);color:var(--text-dark);transform:none}

.btn-sm{padding:0.3rem 0.65rem;font-size:0.76rem}
.btn-lg{padding:0.7rem 1.4rem;font-size:0.95rem}
.btn i{width:16px;height:16px}.btn-sm i{width:14px;height:14px}

/* ========== FORMS ========== */
.form-group{margin-bottom:1.2rem}
.form-label{display:block;font-size:0.82rem;font-weight:600;color:var(--text-dark);margin-bottom:0.3rem}
.form-sublabel{font-size:0.75rem;color:var(--text-faint);font-weight:400}

.form-control{
    width:100%;padding:0.55rem 0.75rem;
    border:1px solid var(--border);border-radius:var(--radius);
    background:white;color:var(--text-dark);font-size:0.85rem;
    transition:border-color var(--transition),box-shadow var(--transition);
}
.form-control:focus{outline:none;border-color:var(--brand-blue);box-shadow:0 0 0 3px rgba(26,111,196,0.1)}
.form-control::placeholder{color:var(--text-faint)}
select.form-control{appearance:auto}
textarea.form-control{resize:vertical;min-height:80px}

.form-row{display:grid;gap:1rem}
.form-row-2{grid-template-columns:1fr 1fr}
.form-row-3{grid-template-columns:1fr 1fr 1fr}
.form-row-4{grid-template-columns:1fr 1fr 1fr 1fr}

.form-check{display:flex;align-items:center;gap:0.5rem}
.form-check input[type="checkbox"]{width:16px;height:16px;accent-color:var(--brand-blue)}
.form-hint{font-size:0.75rem;color:var(--text-faint);margin-top:0.25rem}
.form-error{font-size:0.75rem;color:var(--red);margin-top:0.25rem}

.input-group{display:flex;align-items:stretch}
.input-prefix,.input-suffix{
    padding:0.55rem 0.7rem;background:var(--surface-alt);
    border:1px solid var(--border);color:var(--text-light);
    font-size:0.85rem;display:flex;align-items:center;font-weight:600;
}
.input-prefix{border-right:none;border-radius:var(--radius) 0 0 var(--radius)}
.input-suffix{border-left:none;border-radius:0 var(--radius) var(--radius) 0}
.input-group .form-control{border-radius:0}
.input-group .form-control:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.input-group .form-control:last-child{border-radius:0 var(--radius) var(--radius) 0}

/* ========== TABS ========== */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:1.5rem;overflow-x:auto}
.tab-link{
    padding:0.65rem 1.15rem;font-size:0.84rem;font-weight:500;
    color:var(--text-light);border-bottom:2px solid transparent;margin-bottom:-1px;
    cursor:pointer;white-space:nowrap;transition:all var(--transition);
    background:none;border-top:none;border-left:none;border-right:none;text-decoration:none;
}
.tab-link:hover{color:var(--text-dark);text-decoration:none}
.tab-link.active{color:var(--brand-blue);border-bottom-color:var(--brand-blue);font-weight:600}

.tab-content{display:none}.tab-content.active{display:block}

/* ========== MODAL ========== */
.modal-overlay{
    display:none;position:fixed;inset:0;background:rgba(0,0,0,0.4);
    backdrop-filter:blur(4px);z-index:1000;
    align-items:center;justify-content:center;padding:1rem;
}
.modal-overlay.open{display:flex}

.modal{
    background:white;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);
    width:100%;max-width:540px;max-height:90vh;
    display:flex;flex-direction:column;animation:modalIn 0.2s ease;
}
.modal-lg{max-width:720px}
@keyframes modalIn{from{opacity:0;transform:translateY(12px) scale(0.98)}to{opacity:1;transform:none}}

.modal-header{padding:1.1rem 1.4rem;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}
.modal-title{font-size:1.05rem;font-weight:700;color:var(--text-dark)}
.modal-close{background:none;border:none;cursor:pointer;padding:0.3rem;color:var(--text-faint);border-radius:6px;transition:all var(--transition)}
.modal-close:hover{background:var(--surface-alt);color:var(--text-dark)}
.modal-body{padding:1.4rem;overflow-y:auto;flex:1}
.modal-footer{padding:1rem 1.4rem;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:0.6rem}

/* ========== TOAST ========== */
.toast-container{position:fixed;top:1rem;right:1rem;z-index:2000;display:flex;flex-direction:column;gap:0.5rem}
.toast{
    background:white;border:1px solid var(--border);border-radius:var(--radius);
    box-shadow:var(--shadow-md);padding:0.8rem 1rem;
    display:flex;align-items:center;gap:0.6rem;
    min-width:300px;max-width:420px;animation:slideIn 0.3s ease;
}
.toast.success{border-left:4px solid var(--green)}
.toast.error{border-left:4px solid var(--red)}
.toast.warning{border-left:4px solid var(--yellow)}
.toast.info{border-left:4px solid var(--blue)}
.toast-message{flex:1;font-size:0.84rem;font-weight:500}
.toast-close{background:none;border:none;cursor:pointer;color:var(--text-faint);padding:2px}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ========== UTILITIES ========== */
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}
.gap-1{gap:0.5rem}.gap-2{gap:0.75rem}.gap-3{gap:1rem}
.mt-1{margin-top:0.5rem}.mt-2{margin-top:0.75rem}.mt-3{margin-top:1rem}
.mb-1{margin-bottom:0.5rem}.mb-2{margin-bottom:0.75rem}.mb-3{margin-bottom:1rem}
.text-green{color:var(--green)}.text-red{color:var(--red)}.text-yellow{color:var(--yellow)}
.text-muted{color:var(--text-faint)}.font-bold{font-weight:700}.font-medium{font-weight:500}
.text-sm{font-size:0.8rem}.text-xs{font-size:0.7rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}

/* ========== DETAIL VIEW ========== */
.detail-header{background:white;border-bottom:1px solid var(--border);padding:1.5rem 2rem 0}
.detail-title-row{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:1rem}
.detail-title{font-size:1.35rem;font-weight:800;letter-spacing:-0.02em;color:var(--text-dark)}
.detail-subtitle{font-size:0.85rem;color:var(--text-light);margin-top:2px}
.detail-meta{display:flex;gap:2rem;margin-bottom:1rem;flex-wrap:wrap}
.detail-meta-item{display:flex;flex-direction:column}
.detail-meta-label{font-size:0.65rem;font-weight:700;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.06em}
.detail-meta-value{font-size:1rem;font-weight:700;color:var(--text-dark)}

.checklist-item{display:flex;align-items:center;gap:0.75rem;padding:0.7rem 0;border-bottom:1px solid var(--border-light)}
.checklist-item:last-child{border-bottom:none}
.checklist-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.checklist-icon.ok{background:var(--green-bg);color:var(--green)}
.checklist-icon.warning{background:var(--yellow-bg);color:var(--yellow)}
.checklist-icon.overdue{background:var(--red-bg);color:var(--red)}
.checklist-icon.na{background:var(--border-light);color:var(--text-faint)}
.checklist-text{flex:1}.checklist-label{font-size:0.85rem;font-weight:600}.checklist-sub{font-size:0.75rem;color:var(--text-faint)}

/* ========== LOGIN ========== */
.login-page{
    min-height:100vh;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#1B2A4A 0%,#1A3A5C 50%,#1B4332 100%);
    padding:1rem;position:relative;overflow:hidden;
}
.login-page::before{
    content:'';position:absolute;width:600px;height:600px;border-radius:50%;
    background:radial-gradient(circle,rgba(26,111,196,0.2),transparent 70%);
    top:-200px;right:-100px;
}
.login-page::after{
    content:'';position:absolute;width:500px;height:500px;border-radius:50%;
    background:radial-gradient(circle,rgba(62,173,75,0.12),transparent 70%);
    bottom:-200px;left:-100px;
}
.login-card{
    background:white;border-radius:var(--radius-xl);
    box-shadow:0 20px 60px rgba(0,0,0,0.3);padding:2.5rem;
    width:100%;max-width:400px;position:relative;z-index:1;
}
.login-logo{display:flex;align-items:center;justify-content:center;margin-bottom:2rem}
.login-error{background:var(--red-bg);color:var(--red);padding:0.75rem 1rem;border-radius:var(--radius);font-size:0.85rem;margin-bottom:1rem;display:flex;align-items:center;gap:0.5rem;font-weight:500}
.login-form .form-group{margin-bottom:1rem}
.login-form .btn-primary{width:100%;padding:0.8rem;font-size:0.95rem;margin-top:0.5rem}

/* ========== RESPONSIVE ========== */
@media(max-width:1200px){.summary-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:1024px){.form-row-4{grid-template-columns:1fr 1fr}.grid-2{grid-template-columns:1fr}}
@media(max-width:768px){
    .sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}
    .main-content{margin-left:0}.page-header{padding:1rem}.page-body{padding:1rem}
    .form-row-2,.form-row-3,.form-row-4{grid-template-columns:1fr}
    .summary-cards{grid-template-columns:1fr 1fr}
    .mobile-menu-btn{display:flex!important}
}
@media(max-width:480px){.summary-cards{grid-template-columns:1fr}}

.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;padding:0.5rem;color:var(--text-light)}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:99}
.sidebar-overlay.open{display:block}

@media print{
    .sidebar,.page-header,.btn,.modal-overlay,.toast-container{display:none!important}
    .main-content{margin-left:0!important}.page-body{padding:0!important}
    .card{border:1px solid #ccc;box-shadow:none}
}