:root {
    --primary: #00ff88;
    --primary-dark: #00cc6a;
    --secondary: #6366f1;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-lighter: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text);
    min-height: 100vh;
}

/* ========== LOGIN SCREEN ========== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    top: -250px;
    right: -250px;
    animation: pulse 4s ease-in-out infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    bottom: -200px;
    left: -200px;
    animation: pulse 4s ease-in-out infinite 2s;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.login-box {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 1;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
}

.input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--dark);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 255, 136, 0.1);
}

.login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, #00cc6a 100%);
    border: none;
    border-radius: 12px;
    color: var(--dark);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.login-btn:active {
    transform: translateY(0);
}

.error-message {
    color: var(--danger);
    font-size: 0.9rem;
    margin-top: 1rem;
    text-align: center;
    display: none;
}

.error-message.show {
    display: block;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* ========== DASHBOARD ========== */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* ========== SIDEBAR ========== */
.sidebar {
    width: 280px;
    background: var(--dark-light);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-header i {
    font-size: 2rem;
    color: var(--primary);
}

.sidebar-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(0, 255, 136, 0.05);
    color: var(--text);
}

.nav-item.active {
    background: rgba(0, 255, 136, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.nav-item i {
    font-size: 1.2rem;
    width: 24px;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

.logout-btn {
    width: 100%;
    padding: 0.875rem;
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.logout-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    transform: translateY(-2px);
}

/* ========== MAIN CONTENT ========== */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    background: var(--dark);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.content-header h1 {
    font-size: 2rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* ========== BUTTONS ========== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #00cc6a 100%);
    color: var(--dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
    background: var(--dark-lighter);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--dark-light);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
}

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* ========== CONTENT SECTIONS ========== */
.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== FORM CARDS ========== */
.form-card {
    background: var(--dark-light);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.form-card:hover {
    border-color: var(--primary);
    box-shadow: 0 5px 20px rgba(0, 255, 136, 0.1);
}

.form-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-card h3 i {
    color: var(--primary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.875rem;
    background: var(--dark);
    border: 2px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 255, 136, 0.1);
}

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

.input-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.input-group-inline {
    margin-bottom: 1rem;
}

.input-group-inline label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ========== FILE INPUT ========== */
.file-input {
    width: 100%;
    padding: 0.875rem;
    background: var(--dark);
    border: 2px dashed var(--border);
    border-radius: 10px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-input:hover {
    border-color: var(--primary);
    background: rgba(0, 255, 136, 0.05);
}

.image-preview {
    margin-top: 1rem;
    border-radius: 10px;
    overflow: hidden;
    max-width: 300px;
}

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========== PACKAGES LIST ========== */
.packages-header {
    margin-bottom: 1.5rem;
}

.packages-list {
    display: grid;
    gap: 1.5rem;
}

.package-item {
    background: var(--dark-light);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    transition: all 0.3s ease;
}

.package-item:hover {
    border-color: var(--primary);
    transform: translateX(5px);
}

.package-info h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.package-info .price {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.package-info .features {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.package-actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

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

.icon-btn.edit:hover {
    background: #4f46e5;
    transform: scale(1.1);
}

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

.icon-btn.delete:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* ========== MODAL ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--dark-light);
    border: 1px solid var(--border);
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-body {
    padding: 1.5rem;
}

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

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

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* ========== TOAST ========== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: none;
    align-items: center;
    gap: 0.75rem;
    z-index: 2000;
    animation: slideInRight 0.3s ease;
}

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

.toast.show {
    display: flex;
}

.toast i {
    font-size: 1.5rem;
}

/* ========== MESSAGE ========== */
.message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.9rem;
    display: none;
}

.message.show {
    display: block;
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-actions {
        width: 100%;
        flex-direction: column;
    }

    .header-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .input-row {
        grid-template-columns: 1fr;
    }
}