/* 
 * Global Styles & Glassmorphism Design System 
 */

:root {
    /* Color Palette - Premium Dark/Purple Theme by default */
    --primary-color: #7c3aed; /* Purple */
    --primary-hover: #6d28d9;
    --secondary-color: #3b82f6; /* Blue */
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Light Theme Variables */
    --bg-gradient: linear-gradient(135deg, #f3e8ff 0%, #dbeafe 100%);
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --input-bg: rgba(255, 255, 255, 0.9);
    --input-border: rgba(209, 213, 219, 0.8);
    --input-focus: #7c3aed;
}

/* Dark Theme Variables */
body.theme-dark {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(17, 24, 39, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-border: rgba(71, 85, 105, 0.6);
    --input-focus: #8b5cf6;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-image: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Background Animated Shapes for Glassmorphism effect */
.bg-shape {
    position: absolute;
    filter: blur(80px);
    z-index: -1;
    border-radius: 50%;
    animation: float 10s infinite ease-in-out alternate;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.3);
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: rgba(59, 130, 246, 0.3);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: rgba(16, 185, 129, 0.2);
    top: 40%;
    left: 40%;
    animation-duration: 15s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 30px) scale(1.1); }
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Glassmorphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    box-shadow: 0 12px 40px 0 rgba(0,0,0,0.4);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    justify-content: center;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--glass-border);
}

/* Form Styles */
.form-wrapper {
    width: 100%;
    max-width: 700px;
    margin-top: 2rem;
}

.form-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h2 {
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.section-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.section-desc {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.input-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.required {
    color: var(--danger-color);
}

input[type="text"], 
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-main);
    font-size: 1rem;
    transition: all 0.2s ease;
    outline: none;
}

input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

input:focus, select:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

input.is-invalid {
    border-color: var(--danger-color);
}

.error-msg {
    color: var(--danger-color);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    min-height: 1rem;
    display: block;
}

/* Member Rows */
.member-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1rem;
    animation: slideIn 0.3s ease;
}

.member-row .input-group {
    flex: 1;
    margin-bottom: 0;
}

.remove-member-btn {
    margin-top: 1.75rem;
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid transparent;
}

.remove-member-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--danger-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-size: 1rem;
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.w-100 {
    width: 100%;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(124, 58, 237, 0.39);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(124, 58, 237, 0.39);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.1);
    color: var(--secondary-color);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.2);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--glass-border);
}

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--glass-shadow);
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease forwards;
}

.toast.success { border-left-color: var(--success-color); }
.toast.error { border-left-color: var(--danger-color); }
.toast.warning { border-left-color: var(--warning-color); }

.toast i {
    font-size: 1.25rem;
}
.toast.success i { color: var(--success-color); }
.toast.error i { color: var(--danger-color); }
.toast.warning i { color: var(--warning-color); }

.toast.hiding {
    animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(1);
    transition: transform 0.3s ease;
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.95);
}

.modal-sm {
    max-width: 400px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

/* Utilities */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-danger { color: var(--danger-color); }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-3 { margin-bottom: 1rem; }
.justify-center { display: flex; justify-content: center; gap: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .member-row {
        flex-direction: column;
        gap: 0;
        background: rgba(0,0,0,0.05);
        padding: 1rem;
        border-radius: 8px;
        position: relative;
    }
    .member-row .input-group {
        width: 100%;
    }
    .remove-member-btn {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        margin-top: 0;
        padding: 0.25rem;
    }
}