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

:root {
    --primary-color: #166534;
    --secondary-color: #15803d;
    --accent-color: #15803d;
    --light-gray: #f0f7f1;
    --dark-gray: #34495e;
    --success-color: #15803d;
    --warning-color: #f39c12;
    --danger-color: #dc2626;
    --white: #ffffff;
    --text-color: #1f3325;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f8fbf8;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header/Navbar */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--white);
}

.logo span {
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--white);
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease;
}

.nav-menu a:hover {
    border-bottom-color: var(--secondary-color);
}

.nav-menu a.active {
    border-bottom-color: var(--secondary-color);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-profile span {
    color: var(--white);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #166534;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(21, 128, 61, 0.25);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: #166534;
    transform: translateY(-2px);
}

.btn-success {
    background-color: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background-color: #229954;
    transform: translateY(-2px);
}

.btn-warning {
    background-color: var(--warning-color);
    color: var(--white);
}

.btn-warning:hover {
    background-color: #d68910;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--danger-color);
    color: var(--white);
}

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    display: block;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 5px rgba(21, 128, 61, 0.2);
}

input:focus:invalid,
select:focus:invalid,
textarea:focus:invalid {
    border-color: var(--danger-color);
    box-shadow: 0 0 5px rgba(220, 38, 38, 0.2);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.form-container {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 500px;
    margin: 2rem auto;
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.card-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem;
    background-color: var(--light-gray);
    border-top: 1px solid #ddd;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.table thead {
    background-color: var(--primary-color);
    color: var(--white);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.table tbody tr:hover {
    background-color: var(--light-gray);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Grid */
.grid {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.grid-cols-1 {
    grid-template-columns: 1fr;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Messages and Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left-color: var(--warning-color);
}

.alert-info {
    background-color: #e8f5e9;
    color: #1b5e20;
    border-left-color: var(--success-color);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer p {
    margin: 0.5rem 0;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.hidden {
    display: none;
}

.opacity-50 {
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.65rem 1rem;
        font-size: 0.875rem;
    }
    
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        padding: 0.65rem;
        font-size: 0.95rem;
    }
}
/* =====================================================
   ISU CANTEEN - LOGO DESIGN
   ===================================================== */

/* LOGO SA HEADER */
a.brand-logo {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    text-decoration: none !important;
    color: white !important;
    height: 64px !important;
}

a.brand-logo img {
    display: block !important;
    width: 60px !important;
    height: 60px !important;
    max-width: 60px !important;
    max-height: 60px !important;
    object-fit: contain !important;
    padding: 4px !important;
    background-color: #ffffff !important;
    border: 2px solid #bbf7d0 !important;
    border-radius: 50% !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) !important;
    visibility: visible !important;
    opacity: 1 !important;
}

a.brand-logo span {
    display: inline-block !important;
    font-size: 24px !important;
    font-weight: 700 !important;
    color: white !important;
}

a.brand-logo strong {
    color: #86efac !important;
}


/* =====================================================
   LOGIN / REGISTER / ADMIN LOGIN LOGO
   ===================================================== */

.auth-logo {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 12px !important;
    text-align: center !important;
    margin-bottom: 25px !important;
}

.auth-logo img {
    display: block !important;
    width: 100px !important;
    height: 100px !important;
    max-width: 100px !important;
    max-height: 100px !important;
    object-fit: contain !important;
    padding: 5px !important;
    background-color: #ffffff !important;
    border: 2px solid #bbf7d0 !important;
    border-radius: 50% !important;
    box-shadow: 0 3px 12px rgba(22, 101, 52, 0.18) !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.auth-logo h1 {
    margin: 0 !important;
    font-size: 28px !important;
    color: var(--primary-color) !important;
    font-weight: 700 !important;
}


/* =====================================================
   MOBILE
   ===================================================== */

@media (max-width: 600px) {

    a.brand-logo img {
        width: 48px !important;
        height: 48px !important;
    }

    a.brand-logo span {
        font-size: 20px !important;
    }

    .auth-logo img {
        width: 75px !important;
        height: 75px !important;
    }

    .auth-logo h1 {
        font-size: 23px !important;
    }
}

/* ==========================================
   SECURITY VERIFICATION / CAPTCHA
========================================== */

.security-verification {
    width: 100%;
    padding: 14px;
    margin-top: 18px;
    margin-bottom: 18px;

    background: #f8f9fa;
    border: 1px solid #d9dee3;
    border-radius: 9px;

    box-sizing: border-box;
}

.security-title {
    font-size: 12px;
    color: #555;

    letter-spacing: 0.5px;

    margin-bottom: 10px;

    text-align: left;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 9px;
}

/* CAPTCHA CODE BOX */
.captcha-code {
    width: 120px;
    height: 50px;

    background: #ffffff;

    border: 1px solid #cfd5dc;
    border-radius: 7px;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: 20px;
    font-weight: bold;

    letter-spacing: 2px;

    color: #168000;

    user-select: none;

    /* simple CAPTCHA effect */
    text-decoration: line-through;
}

/* CAPTCHA INPUT */
.captcha-input {
    flex: 1;

    height: 50px;

    box-sizing: border-box;

    border: 1px solid #cfd5dc;
    border-radius: 7px;

    padding: 0 15px;

    font-size: 17px;

    text-align: center;

    letter-spacing: 2px;

    outline: none;
}

.captcha-input:focus {
    border-color: #008000;

    box-shadow:
        0 0 0 2px rgba(0, 128, 0, 0.1);
}

.captcha-input::placeholder {
    color: #9aa1aa;

    letter-spacing: 1px;
}

/* REFRESH BUTTON */
.captcha-refresh {
    width: 40px;
    height: 50px;

    border: none;

    background: transparent;

    font-size: 25px;

    color: #6b7280;

    cursor: pointer;

    transition: 0.2s;
}

.captcha-refresh:hover {
    color: #008000;

    transform: rotate(20deg);
}